第一篇:北師大版一年級(jí)下Unit 9Lesson 5教案
教學(xué)內(nèi)容:
學(xué)習(xí)歌謠
教學(xué)目標(biāo):
初步學(xué)習(xí)歌謠并表演。
教學(xué)重點(diǎn):
學(xué)習(xí)歌謠
教學(xué)難點(diǎn):
歌謠中第三、七句。
教具準(zhǔn)備:
多媒體課件,教學(xué)過(guò)程:
一、Warm-up
1.Sing the song 培養(yǎng)興趣
2.利用卡片復(fù)習(xí)本課單詞。訓(xùn)練認(rèn)讀能力
3..提問(wèn) What do you like? 請(qǐng)生回答,或生生互問(wèn)。培養(yǎng)交際能力
二、Say the rhyme
1.播放課件,展示歌謠畫(huà)面。
2.請(qǐng)生說(shuō)出畫(huà)面上的單詞。培養(yǎng)觀察能力
3.請(qǐng)生看書(shū)上20頁(yè)的插圖,引導(dǎo)學(xué)生說(shuō)出雨水,女皇和機(jī)器人的名 稱。
4.讓學(xué)生認(rèn)真觀察圖中兩個(gè)人物的表情,并說(shuō)一說(shuō)他們是否高興以 及不高興的原因。培養(yǎng)觀察想象能力
5.播放課件,請(qǐng)生跟讀,逐句進(jìn)行,教師檢查。
6.放錄音讓學(xué)生認(rèn)真聽(tīng),使學(xué)生理解歌謠大意。
7.再放一遍,請(qǐng)生跟著說(shuō)。
8.第三遍放錄音,讓生邊表演邊說(shuō)唱。培養(yǎng)模仿朗讀的能力和表演能力
三、Read and match
1.Please turn to page 2
42.讓學(xué)生看圖上對(duì)話框中的文字。
3.告訴學(xué)生要把文字和圖連起來(lái)。
4.教師逐句帶讀對(duì)話框中的文字。
5.讓生把句子和相應(yīng)的圖連起來(lái)。培養(yǎng)認(rèn)讀理解能力
6.檢查活動(dòng)結(jié)果,讓學(xué)生自愿讀句子。
7.請(qǐng)生涂上顏色。
四、Homework
說(shuō)歌謠給父母聽(tīng)。
課后小結(jié)
第二篇:北師大版小學(xué)英語(yǔ)一年級(jí)(下)英文教案
Unit 7 Animals Lesson 1 Teaching aims: Vocabulary: rabbit
bird
numbers one through ten
dog
cat
fish Structures(New)
Receptive: What is it?
Productive: It’s a dog.Structures(Review)
Receptive: How many…? Teaching preparation:
Prepare the posters and flashcards for this lesson.Teaching steps:
? Step1:review the numbers one through ten.Call out numbers from one trough ten randomly.Have children listen and hold up the correct number of fingers.? Step2:Preview
Review the words dog, cat and fish with the flashcards.Hold up the flashcard for rabbit.Present the word rabbit.Model the word at least twice, and then have the children repeat after you in a choral drill.Point to the picture and elicit the word from individual children.Repeat the step above to present the new vocabulary: bird.Review the five words by repeating the step above.? Step3:Presentation of new language
Have children open their books and look at the picture.Using Chinese, discuss the picture.Ask children where the characters are, what they are doing, how they feel, what Ann has bought, and so on.Ask, “What colors can you see ?” Hold up your copy of the book and point to different animals, eliciting the colors.Now point to the dogs and ask, “How many dogs are there?” Elicit, “Three.”
Repeat the step above for bird, cat, rabbit, and fish.? Step4:Talk about the story
Have the children look at the pictures as you play the tape.Play the tape again and have the children repeat the words.? Step 5:Touch and say
Have children open their books and direct their attention to the pictures and words along the foot of the page.Play the tape, and have them point to each picture as they hear the matching word.Replay the tape while displaying your copy of the page.Without the tape, read the words together.板書(shū)設(shè)計(jì):
Lesson 1 What is it? It’s a dog.How many…? 課后小結(jié):由于是新授課,學(xué)生對(duì)單詞的掌握情況不太熟練,下節(jié)課要多練習(xí)。Lesson 2 Teaching aims: ? Structures(Review)
What is it?
It’s a dog.Vocabulary: dog
cat
rabbit
fish
bird Teaching preparation:
The flashcards for this Unit.Teaching steps: ? Step 1:Preview
Review the flashcards for this Unit.Collect together pictures of fish, dogs, cats, rabbits, and birds.Cover one of the pictures with a piece of card so that when you hold it up, the children cannot see what it is.Have the children guess what animal it is.Elicit “It’s a fish.” Repeat the steps for dog, cat, rabbit, and bird.? Step 2:Trace and match
Have the children look at the pictures to be traced at page 4.Have the children trace the animals and say the sentences for each one.Now have children read the sentences on the page.Direct them to join the words to the matching pictures with a pencil.? Step 3:Sing the song Read the words and have children listen and follow the words silently.Play the tape without stopping.Have children listen and point to each number and animal as it mentioned.Play the song again and have children join in with the words.As they chant they should point to the illustrations.Divide the class into five groups.Assign each group two consecutive numbers.Each group sings a verse and the class mimes or does an imitation of the animals mentioned.? Step 4:Set homework Ask the children to remember the words.課后小結(jié):學(xué)生對(duì)數(shù)字掌握的比較熟練,但個(gè)別學(xué)生對(duì)句子掌握的不是太好,下課后需多加輔導(dǎo)。Lesson 3 Teaching aims: Review: What is it?
It’s a dog.Teaching preparation: Flashcards for cat, dog, rabbit, fish, and bird.Pencils or crayons.Teaching steps: ? Step 1:Listen and practice Have the children open their books at page 6.draw their attention to the photograph of the mouse.Point to the picture on the page and say, “This is mouse.” Play the tape, pointing to the photograph of the word.Now replay the tape and have children touch the photograph as they listen.Play the tape one more time and have children listen and repeat the word, mouse.Repeat the procedure above for the words monkey, net and nest.? Step2:Say the rhyme Tell the children that they are going to learn a thyme about animals.Play the tape, the teacher acts out the thyme while listening to it.Try to make children understand the meaning of the thyme.Play the tape for third time, have the children listen to the tape and encourage them to say one or two words with the tape.Play the tape again and again and have the children act or clap their hands with the rhyme, have them shout out words or phrases.Have the children act out with the teacher while trying to say the rhyme.? Step 3:Match and draw Hold up your copy of the book, point to each drawing and elicit the name of the animal.Draw children’s attention to the seven pictures of pet animal habitats.Explain that they are going to decide which animal lives where.Now have the children copy the line drawing of each animal into the correct place.? Step 4:Homework Ask each child to make a mask of their favorite animal.課后小結(jié):這節(jié)課作練習(xí)效果比較好,學(xué)生掌握單詞的熟練程度好多了。Lesson 4 Teaching aims: ? Structures(Review)What is it?
It’s a dog.? Vocabulary: dog
cat
rabbit
fish
bird
mouse monkey Teaching step: ? Step 1: Warm-up Review he rhyme from the previous lesson.Have children say the rhyme in a class chorus.Then say it in teams or chose individual student to say the rhyme.Encourage students singing animal songs or saying animal rhyme while imitating the animal.? Step 2 Review with poster Using Chinese, ask them to describe the picture.Ask where the characters are, what they are doing and how the children think the characters feel.Say, “Point to a dog.” and have the children point to a dog.Repeat this for bird, cat, fish, and rabbit.Practice asking yes/no questions.Point to the rabbit and ask, “Is it a dog?” Elicit, “No” or “No, it is a rabbit.” ? Step 3: Match and color Say, “Open your books.” Have the children look at the picture.Say “Find a dog.” Have children point to a dog in the picture.Repeat the step above for fish, cat, rabbit, bird, mouse and monkey.Draw children’s attention to the text at the top of the page.Have them read each sentence silently.Explain that they are going to match each sentence with one of the animals.Set enough time for children to do the matching activity.Then have them color each animal according to the sentences.? Step 4: Find and color Have the children open their books and look at the picture.Explain that in the picture there are some animals.Give children a few minutes to look for the animals.When all the children have found the animals, they can color them and share their pictures with class.? Step 5: Set homework Review the words 課后小結(jié):在做練習(xí)之前先對(duì)單詞進(jìn)行復(fù)習(xí),學(xué)生熟練掌握之后,再做單詞連線,學(xué)生掌握的比較好。Unit 8 Shapes Lesson 1 Teaching aims: ? Structures(New)Receptive: What shape is it?
Productive: It’s a square.? Structures(Review)Receptive: What is it?
Productive: It’s a dog.? Vocabulary(New):square circle triangle star
heart rectangle ? Vocabulary(Review): dog cat rabbit fish bird mouse monkey net nest Teaching preparation: Prepare student cards, poster for this Unit, scissors, crayons, and pencils.Teaching Steps: ? Step 1: Review Review the words.Ask, “What is it ?” and have children respond, “It’s a dog.” Repeat for all the words of animals.? Step 2: Preview Use the flashcards to present the new vocabulary.Hold up the flashcard for square and have children look at it.Point to the square and say, “It’s a square.” Present the word, square.Model the word at least twice.Now have children repeat after you in a choral drill.Then point to the shape and elicit the word from individual children.Repeat the step above and present the new vocabulary: circle, triangle, rectangle, star, and heart.Review the six new words by holding up different shapes and eliciting the word from the children in a choral drill, and then from individuals.? Step 3: Model the dialog Pin up the Poster for this Unit where all the children can see it.Allow a few minutes for the children to look at it.Using the cookies on the poster to present the other new structures: It’s a square, It’s a circle, It’s a triangle.? Step 4: Talk about the story Have the children open their books at pages 10.Have the class look at the picture as you play the tape.Play the tape again and have the children repeat the words.? Step 5: Story Play the tape and have the children look at the pictures as they listen.Play the tape again, pausing at each picture.Have the children repeat the words each time.? Step 5: Set homework Ask the children to remember the words and practice the sentences.課后小結(jié):本課的單詞為形狀類,而且發(fā)音較難,可以指出新單詞中發(fā)音與原來(lái)所學(xué)單詞相同,學(xué)生接受的會(huì)更快一些,例如:circle中的/ir/與bird中的/ir/發(fā)音相同。Lesson 2 Teaching aims: ? Structures(Review)Receptive: What shape is it?
Productive: It’s a square.? Vocabulary: square circle triangle star heart rectangle Teaching preparation: Flashcards for this Unit.The puppet of Uncle Booky.Pencils and crayons for coloring.Teaching steps: ? Step 1: Review Have the children take out the set of shapes that they made in the previous lesson.Say, “Star” and have children stand up and hold up their star shape.Repeat the step above for square, circle, triangle, rectangle, and heart.Let children call out shape names and have the class listen and trace the shape in the air.? Step 2: Preview Place your set of flashcards in a box, a hat, or inside a book so that the children cannot see.Very slowly remove one of the shapes from the box.Children watch and try to guess what the shape is.Have them call out, “It’s a square.”
Continue until you have revealed all the shapes.? Step 3: Look and draw Student Activity Book page 12 Have the children look at the shapes to be traced.Give the children a few minutes to look the picture carefully, and find the shapes.Do the first line with the children and give children enough time to finish all the blanks.Check the answers by having children hold up their books and show their pictures to the rest of the class.? Step 4: Sing the song Explain to the children that they are going to learn a sng about shapes.Say the names of the shapes and have children point to each one.Read the words and have children listen and follow th e words silently.Now play the tape without stopping.Have children listen and point to each shape as it is mentioned.Play the song angina.Have children join in with the words.As they sing, they should point to the shapes.? Set homework Sing the new song to their families.課后小結(jié):興趣是最好的老師,在游戲中教學(xué)往往得到很好的效果,本節(jié)課的歌曲引導(dǎo)學(xué)生在韻律和節(jié)奏中記憶掌握單詞,學(xué)生掌握情況好多了。Lesson 3 Teaching aims: ? Structures(Review)Receptive: What shape is it?
Productive: It’s a square.? Vocabulary: square circle triangle star heart rectangle Teaching preparation: Flashcards for this Unit.Children’s sets of shapes.Pencils and crayons for coloring.Teaching steps: ? Step 1: Review Review the flashcards for shapes that the children have already known.? Step 2: Listen and practice Direct children to open their books and draw their attention to the photograph of he orange.Point to the picture and say, “This is an orange.”
Play the tape, pointing to the photograph of the word.Now replay the tape and have children touch the photograph as they listen.Play the tape on more time and have children listen and repeat he word, orange.Repeat the procedure above for other words, octopus, and pen.Review the word pencil with the flashcard.? Step 3: Say the rhyme Tell the children that they are going to learn a rhyme.Play the tape , the teacher acts out the rhyme while listening to it.Try to make children understand the meaning of the rhyme.Play the tape again, and encourage the children to clap their hands or act out while listening.Encourage children to say one or two words with the tape.Have the children act out with the teacher while trying to say the rhyme.? Step 4: Trace and match Have children look at the shapes to be traced at page 15.Direct the children to trace each shape carefully and produce the word for each one.Now have them read the vocabulary words on the page.Explain that they are going to match each word with one of the shapes.Have children join the words to the shapes with a pencil.? Step 5: Set homework Ask the children to say the rhyme to their families.課后小結(jié):歌謠提高了學(xué)生的興趣,大部分學(xué)生聽(tīng)說(shuō)練習(xí)都達(dá)到了熟練的程度,個(gè)別學(xué)生需要輔導(dǎo)。Lesson 4 Teaching aims: ? Structures(Review)Receptive: What shape is it?
Productive: It’s a square.? Vocabulary: square
circle
triangle
star
heart rectangle orange octopus ostrich pig peacock Teaching preparation:
poster for this Unit Pencils and crayons for coloring Teaching steps: ? Step 1: Warm-up Review the rhyme from the previous lesson.Have children say the rhyme in a class chorus, then in teams or chose individual student to say it.Review the words belong to shapes.? Step 2: Review with poster Give the children an opportunity to produce anything they can about the illustration.Point to different objects and ask, “What color?” Elicit, red, brown, green and so on.Point to different objects and ask, “How many?” Elicit, one, two, and so on.Say, “Show me a circle.” Have children point to a circle.Repeat the step above for square, triangle, star, and heart.? Step 3: Read and color Direct their attention to the instructions in the top left-hand corner of the page 16.Read the instructions together and check that all the children understand what they are going to do.Have children find the shapes within the body of the robot and color according to he instructions.Check the answers by having children hold up their books and show their colored pictures to the rest of the class.? Step 4: Find and color Explain that children are going to look for the shapes within the picture and say the name of each one.Ask the children to color the shapes and check the answers.? Step 5: Set homework Ask the children to review the words and sentences of this unit.課后小結(jié):通過(guò)復(fù)習(xí)和練習(xí),大部分學(xué)生已經(jīng)掌握了本單元的單詞和指令,課本練習(xí)中的涂色練習(xí)很好的檢查了學(xué)生掌握單詞的情況,根據(jù)教學(xué)反饋及時(shí)調(diào)整教學(xué)進(jìn)度和教學(xué)方式。Unit 9 Food and drink Lesson 1 Teaching aims: ? Structures(New)
Productive: I like hamburgers.? Structures(Review)Receptive: What shape is it?
Productive: It’s a square.? Vocabulary: hamburgers
French fries pizza
chicken juice milk ice cream rice noodles Teaching preparation: Flashcards for Unit 8.The poster for this unit Scissors, pencils, and crayons for coloring Teaching steps: ? Step 1: Review Review the words of shapes.? Step 2: Preview Use the flashcards of food and drink items to present the new vocabulary.Hold up the flashcard for milk.Say, “It’s milk.” Present the word milk.Model the word at least twice.Now have children repeat after you in a choral drill, then elicit the word from individuals.Repeat the step above and present the following new vocabulary: hamburgers ,French fries, pizza, chicken, juice, milk, ice cream, rice and noodles.Review the nine new words by holding up the flashcards and eliciting the words from the children in a choral drill, then from individuals.? Step 3: Presentation of new language Pin up the poster for this unit where all the children can see it.Allow a few moments for the children to look at it.Teach the concept of “l(fā)ike.” Point to the hamburgers on the poster and convey the idea to the children that you like them.Present the structure, I like hamburgers.Model the structure at least twice.Now have children repeat after you in a choral drill, then elicit the structure from individuals.Repeat the step above ad, using the food and drink illustrations in the poster, present the other new structures:I like French fries, I like pizza, I like chicken, I like juice, I like milk and so on.? Step 4: Story Have the children open their books to pages 18.Have the children look at the picture as you play the tape.Play the tape again and have the children repeat the words.? Step 5: Touch and say Have children open their books and direct their attention to the illustrations and words that appear around the border.Play the tape, and have them point to each picture as they hear the matching word.Replay the tape while displaying your copy of the page.Touch the photograph of pizza, say, “I like pizza.” Repeat this procedure for other photographs.Have children word in pairs.One child points to pictures of food and drink items that he or she likes and produces the structure.The other child looks and listens.Explain to the children that they only point and talk about the pictures of the food and drinks that they like.? Step 6: Set homework Ask the children to remember the words of food.課后小結(jié):用情景來(lái)引入課文,發(fā)現(xiàn)學(xué)生的興趣很高,而且學(xué)習(xí)效率也提高了很多,以后要多多采用。Lesson 2 Teaching aims: ? Structures(Review)Productive: I like hamburgers.? Vocabulary: hamburgers
French fries pizza
chicken juice milk ice cream rice noodles Teaching preparation: Flashcards for this Unit.Pencils or crayons Children’s sets of food and drink cards.Teaching steps: ? Step 1: Warm-up Hold up the flashcard for milk.With the other hand bounce a ball on the floor and have children produce the word milk each time you bounce the ball.Vary the pace at which you bounce the ball.Repeat the procedure with the pictures for the other vocabulary items.? Step 2: Preview Cover the flashcard for ice cream with a piece of paper or card so that the children cannot see the picture.Hold up the covered picture and very slowly begin removing the paper or card.Children try and guess what the food or drink item is.Have them call out their guesses.Continue until you have revealed all the vocabulary items.? Step 3: Trace and circle Have the children look at the pictures to be traced.Have children carefully race each item and orally produce the word for each one.Now have them read the vocabulary words below each picture.Explain that they are going to choose the correct word for the picture and circle it.Have children circle one of the words with a pencil.? Step 4: Sing the song Tell children that they are going to learn a song about food and drink.Read the words and have children listen and follow the words silently.Explain that only the first three verses are printed on the page, but that the children will hear about all the food and drink items that are illustrate.Now play the tape without stopping.Have children isten and point to each food or drink item as it is mentioned.Play the song again and have children join in with the words.As they sing, they should point to the pictures.? Step 5: Set the homework Ask the children to sing the song to their families.課后小結(jié):指令練習(xí)和歌曲提高了學(xué)生的興趣,在游戲中教學(xué),可以達(dá)到事半功倍的效果。Lesson 3 Teaching aims: ? Structures(Review)Productive: I like hamburgers.? Vocabulary: hamburgers
French fries pizza
chicken juice milk ice cream rice noodles quilt queen Teaching preparation: Flashcards for this Unit.Pencils or crayons Children’s sets of food and drink cards.Teaching steps: ? Step 1: Warm-up Review the rhyme from the previous lesson.Have children say the rhyme in a class chorus, then have them say it in teams or chose individual student to say.Review the sentence “I like milk.”
? Step 2: Listen and practice Have the children open their books at page 22.Point to the picture and say, “This is a quilt.”
Play the tape, pointing to the photograph of the word.Now replay the tape and have children touch the photograph as they listen.Play the tape one more time and have children listen and repeat the word, quilt.Repeat the procedure above the words queen, rabbit and rice.? Step 3: Say the rhyme Tell the children that they are going to learn a rhyme.Play the tape, the teacher acts out the rhyme while listening to it.Try to make children understand the meaning of the rhyme.Play the tape again, and encourage the children to clap their hands or act out while listening.Play the tape again and again and have the children act or clap their hands with the rhyme, have them shout out words or phrases.Have the children act out with the teacher while trying to say the rhyme.? Step 4: Read and draw Have the children open their books to page 23.Have them look at the pictures of food and drink and elicit the vocabulary.Point to the picture of pizza and ask them which category it belongs to.Repeat this for the other eight items.Allow the children time to draw each item in the appropriate group.課后小結(jié):在歌謠學(xué)習(xí)過(guò)程中,鼓勵(lì)學(xué)生看圖猜測(cè)歌謠大意,引導(dǎo)學(xué)生主動(dòng)學(xué)習(xí),并通過(guò)歌謠的學(xué)習(xí)復(fù)習(xí)單詞,效果較好。Lesson 4 Teaching aims: ? Structures(review)Productive: I like hamburgers.? Vocabulary: hamburgers
French fries pizza
chicken juice milk ice cream rice noodles quilt queen rain robot Teaching preparation: Flashcards for this Unit.Pencils or crayons Children’s sets of food and drink cards.Teaching steps: ? Step 1: Warm-up Have children pick a card from their sets of food and drink items.Have them read it and practice the sentences.? Step 2: Review with poster Review the vocabulary and structures for this Unit with the poster.Give children an opportunity to produce anything they can about the illustration.Point to the pizza that Ken is eating and ask, “What is it?” Elicit, “Pizza.”
Repeat the step above for the other eight vocabulary items.Point to Mocky’s speech bubble and say, “I like hamburgers.” Have children repeat after you.Point to the other food and drink items and elicit the I like ? structure as a choral drill, then from individuals.? Step 3: Read and match Have them read each one silently then look at the pictures.Explain that they are going to match each sentence with one of the pictures.Have children match each sentence to one of the pictures with a line.Check the activity by having volunteers read out a sentence and show the class the picture to which it refers.? Step 4: Find and color Have the children look at the picture at page 25.Explain that they are going to look for things within the picture and color each one in a different color.Have the children count the number of each object and write the number on the right column.? Step 5: Set homework Ask class to review the words and sentences of this unit.課后小結(jié):本節(jié)課是復(fù)習(xí)課,做練習(xí)之前對(duì)單詞和句型進(jìn)行充分的復(fù)習(xí),再做課本上的涂色與連線練習(xí),學(xué)生掌握的效果很好。Unit 10 Family Lesson 1 Teaching aims: ? Structures(New)Who’s this? This is my mother.? Structures(Review)I like hamburgers.? Vocabulary(New)Mother father sister brother friend ? Vocabulary(Review)Hamburgers French fries pizza chicken juice milk ice cream noodles Teaching preparation Children’s sets of food and drink picture cards from unit 9 The poster for this unit The mask of Ann A piece of paper for each child, and crayons for coloring.Teaching steps: ? Step1: Warm-up Review the food and drink vocabulary from the previous unit.? Step 2: Preview Use the poster for this unit to present the new vocabulary.Pin up the poster where all the children can see it and hae them look at it for a few moments.Explain that today they are going to learn about family members.Point to the picture of Ann’s mother and say, “This is Ann’s mother.” Model the word at least twice.Now have children repeat after you in a choral drill, then point to the picture and elicit the word from individuals.Repeat the step above and present the following new vocabulary: father, sister, brother, friend.Review the new words by pointing to different people in the picture and eliciting the appropriate word from the children.? Step 3 presentation of new language Have the children look at the poster.Point to Ann’s mother in the poster and say, “This is my mother.” Present the structure at least twice.Now have children repeat after you in a choral drill.Repeat the step above and , by pointing to the other people in the picture, present the other new structures: This is my father.This is my sister.This is my brother.This is my friend.Review the structures by pointing to different people in the picture eliciting the structure as a choral drill, then from individual children.? Step 4 Talk about the story Have the children open the book at pages 26.Have the children look at the picture as you play the tape.Play the tape again and have the children repeat the words.? Step 5 Extension Hand out a piece of paper for each child.Explain that they are going to draw pictures of their families.It will include their mother, father, sisters, and brothers.Ask them to include a drawing of a friend.Children place their completed drawings on he desk in front of them.Call out items and have children point to the people in their pictures.? Step 6 Set homework Ask children to bring in a photograph or photographs of their families and friends for the next lesson.課后小結(jié):本單元的重點(diǎn)詞匯屬于家庭類,在引入時(shí)注意設(shè)置適當(dāng)?shù)那榫皢?dòng)學(xué)生的原有知識(shí)庫(kù),調(diào)動(dòng)學(xué)生學(xué)習(xí)積極性。Lesson 2 Teaching aims ? Structures(Review)This is my mother.? Vocabulary Mother
father
sister
brother
friend
Teaching preparation Flashcards for Unit 10 Children’s family photographs.Teaching steps: ? Step 1 Flashcards review Use the flashcards to review vocabulary for this Unit.? Step 2 Read and match Have the children look at the pictures of family on the page 28.Direct the children to read the words on the page.Explain that they are going to match each word with a character in the picture.Set a reasonable time for children to complete the task.Check the activity by having children hold up their books and show the class which word they joined with each character.If there is time, children can color the picture.? Step 3 Sing the song Have the children open their books at page 29.Explain that they are going to learn a new song about family and friends.Say the words and have children point to each person as you say them.Read the words and have children listen and follow the words silently.Explain that only the first three verses are printed on the page, but that the children will hear about all the people who are illustrate.Play the tape without stopping.Have the children listen and point each family member as they are mentioned.Play the tape again and have children join in with the words.As they sing, they should point to the pictures.Have children take out their family photographs or drawings.Encourage volunteers to point to one of their family members and sing a verse of he song about them.? Step 4 Set homework Explain to the children that you want them to sing the new song to their families.課后小結(jié):在課堂上適當(dāng)調(diào)整內(nèi)容結(jié)構(gòu),融入一些音樂(lè),學(xué)生在歡樂(lè)中學(xué)到的知識(shí)更牢固,以后要多采用。Lesson 3 Teaching aims: ? Structures(Review)This is my mother.? Vocabulary(Review)Mother
father
sister brother
friend ? Vocabulary(New)Salad
sandwich
tomato
tea Teaching preparation You will need: Pencils and crayons for coloring Children’s family photographs or drawings.Teaching steps: ? Step 1 Review Review the words and sentences that have learned.? Step 2 Listen and practice Have the children open their books at page 30.Draw their attention to the photograph of the sandwich.Point to the photograph of the word.Play the tape, pointing to the photograph of the word.Now replay the tape and have children touch the photograph as the listen.Play the tape one more time and have children listen and repeat the word, sandwich.Repeat the procedure above for the word salad, tomato and tea.? Step 3 Say the rhyme Tell the children that they are going to learn a rhyme.Play the tape, the teacher acts out the rhyme while listening to it.Try to make children understand the meaning of the rhyme.Play the tape again, and encourage the children to clap their hands or act out while listening.Play the tape again and again and have the children act or clap their hands with the rhyme, have them shout out words or phrases.Have the children act out with the teacher while trying to say the rhyme.? Step 4 Trace and match Direct children’s attention to the things they are going to trace.Help them to trace the food and drink carefully and say the names of these things.Read the words in the middle of the page.Ask children to match the pictures with the words.If there is time, have children color the pictures.? Step 5 Set homework Tell the children that you want them to color the pictures for homework.課后小結(jié):同過(guò)反復(fù)的聽(tīng)說(shuō)練習(xí),加強(qiáng)了學(xué)生對(duì)單詞和句型的理解,在做練習(xí)前先復(fù)習(xí)所學(xué)知識(shí),效果比較好。Lesson 4 Teaching aims ? Structures(Review)This is my mother.? Vocabulary Mother
father
sister
brother
friend
salad
sandwich
tomato
tea Teaching preparation The poster of this unit.Pencils and crayons for coloring.Teaching steps: ? Step 1 Review with poster Using Chinese, talk about the picture.Discuss what Ann and Mocky are doing, where the family is on vacation and what each person is doing in the pictures.Point to the ice cream and ask, “What’s this?” Elicit, “Ice cream.” Review the family members and friend.? Step 2 Read and circle Have the children open their books at page 32 and ask them to look at the family tree.Using Chinese, ask them if they know what a family tree.Point to each person in the family tree and elicit the vocabulary words.Now have children read the words below each illustration.Explain that they are going to circle the word that describes the person above/ Have children circle five words and then check the activity together.Have children hold up their books and show the class the word that they circled for each person.? Step 3 Find and color Have children look at the picture and say anything they can about it in English.Point to different family members in the picture and elicit the vocabulary.Explain that children are going to look for the things they have learned within the picture and color each one in a different color.Set enough time for the children to color the picture and check the exercise by having children hold up their books and show their pictures to the rest of the class.? Step 4 Set homework Review the words of this unit.課后小結(jié):通過(guò)學(xué)習(xí),學(xué)生對(duì)單詞和句型已經(jīng)熟練掌握,在原有知識(shí)的基礎(chǔ)上讓學(xué)生理解家庭樹(shù)的含義,學(xué)生的興趣很高,求知欲強(qiáng),效果比較好。Unit 11 Clothes Lesson 1 Teaching aims ? Structures(New)It’s a dress.They are pants.? Structures(Review)This is my sister.? Vocabulary Dress
shirt
pants
sweater
socks
shoes Teaching preparation Prepare the flashcards for this unit and the poster for this unit.Teaching steps ? Step 1 Warm-up Review the family words and rhyme from the previous unit.? Step 2 Preview Hold up the flashcard for sweater.Say, “It’s a sweater.” Model the word sweater at least twice.Now have children repeat after you in a choral drill, then elicit the word from individuals.Repeat the step above and present the new words shirt and dress.Now hold up the flashcard for pants.Say, “They are pants.” Model the word pants at least twice.Now have children repeat after you in a choral drill, then elicit the word from individuals.Repeat the step to present shoes and socks.Review the new words by holding up different flashcards and eliciting the word from the children in a choral drill.? Step 3 Story Have the children open their books at pages 34.Have them look at the picture as you play the tape.Play the tape again and have the children repeat the words.? Step 4 Touch and say Have children open their books and direct their attention to the words that appear along the foot of the page.Play the tape , and have them point to each picture as they hear the matching word.Replay the tape while displaying your copy of the page.Direct the children to look at the pictures at the bottom of this page.Have them work in pairs, taking turns to point to and say the words for all the pictures.Provide a teacher-children example: have one child point to a photograph;you respond with the word.? Step 5 Set homework Have children open their books to the page of the clothes cards.Have the children color them.課后小結(jié):本單元為服裝類詞匯,在引入新單詞時(shí),要先復(fù)習(xí)以前所學(xué)的顏色詞匯,在由學(xué)生本身的著裝引入所學(xué)單詞,效果較好。Lesson 2 Teaching aims ? Structures(Review)It’s a shirt.They are shoes.? Vocabulary Dress
shirt
pants
sweater
socks
shoes Teaching preparation Prepare the flashcards for this unit and the poster for this unit.Children’s clothes picture cards.Teaching steps ? Step 1 Review Have children take turns to call out words and have the other children listen and hold up their picture cards.? Step 2 Preview Cover the flashcard of a dress with a piece of paper or a card so the children cannot see it.Hold up the covered flashcard and gradually reveal it by slowl removing the paper or card.Have children try to guess what the clothing item is.Explain that they must use It is or They are in order to win the point.Have theme call out their guesses individually, or make it into a team game.Repeat the procedure with the flashcards of the other clothes vocabulary.? Step 3 Trace and match Have children open their books and look at the pictures that they are going to trace and guess what each one is.Elicit, “It’s a shirt.” Or “They are socks.”
Now have children trace each item of clothing with a pencil/ Ask the children to read the words on the page.Have them match each word with one item of clothing.Check the answer by having children hold up their books and show the class which word they joined with which item of clothing.? Step 4 Sing the song Have the children look at the illustrations that accompany the song.Say the names of the clothes and have children point to each item.Read the words and have children listen and follow the words silently.Play the song straight through.Have the children listen and point to the clothes as they are mentioned.Play the song again.Have the children join in with the words.Have children take out their sets of clothes cards.Play the tape again and have children hold up the clothes items as they are mentioned.? Step 5 Set homework Ask the children to sing the new song to their families.課后小結(jié):歌曲的反復(fù)誦唱讓學(xué)生在節(jié)奏和韻律中再次熟悉所學(xué)單詞,在歌曲的學(xué)習(xí)過(guò)程中,假如適當(dāng)?shù)膭?dòng)作 幫助學(xué)生理解歌詞含義,學(xué)生興趣很高。Lesson 3 Teaching aims ? Structures(Review)It’s a shirt.They are shoes.? Vocabulary(Review)Dress
shirt
pants
sweater
socks
shoes ? Vocabulary(New)Umbrella
violin
watermelon
watch Teaching preparation Prepare the flashcards for this unit and the poster for this unit.Children’s clothes picture cards.Teaching steps ? Step 1 Review Call out clothes words randomly and have children respond by miming getting dressed.? Step 2 Listen and practice Ask children to open their books and draw their attention to the photograph of the umbrella.Point to the picture on the page and say, “This is an umbrella.”
Play the tape, pointing to the photograph of the word.Now replay the tape and have children touch the photograph as they listen Play the tape one more time and have children listen and repeat the word, umbrella.Repeat the procedure above for other words, violin, watermelon and watch.? Step 3 Say the rhyme Tell the children that they are going to learn a rhyme.Play the tape, the teach acts out the rhyme while listening to it.Try to make children understand the meaning of he rhyme.Play the tape again, and encourage the children to clap their hands or act out while listening.Play the tape for the third time, have the children listen to the tape, and encourage them to say one or two words with the tape.Play the tape again and again and try to have the children act or clap their hands with the rhyme, have them shout out words or phrases.Have the children act out with the teacher wile trying to say the rhyme.? Step 4 Read and color Have the children look at the picture on the page 39.Ask children what they can see.Ask them if this looks like their bedroom at home.Now say, “ They are blue.” Have children color the socks blue.Repeat the procedure for the other items in the picture.? Step 5 Set homework Ask the children to say the rhyme to their families.課后小結(jié):本課中的連線很好地檢測(cè)了學(xué)生對(duì)單詞的掌握情況,在聽(tīng)說(shuō)練習(xí)中加深學(xué)生對(duì)句型的掌握,這樣可以達(dá)到很好的效果,以后要多采用。Lesson 4 Teaching aims ? Structures(Review)It’s a shirt.They are shoes.Teaching steps ? Step 1 Warm-up Review the rhyme from the previous lesson.Say the rhyme in a class chorus, then in groups or chose individual student to say.? Step 2 Review with poster Review the vocabulary and structures for this unit with the poster.? Step 3 Read and match Have children look at the pictures at page 40.Have them say the English names of these pictures.Teacher says the English, and have the children point to the picture.Have the children read the sentences in the middle.Explain that they are going to match each sentence with one of the pictures.Have the children match each sentence to one of the pictures with a line.? Step 4 Find and color Have children open their books, look at the picture and say anything they can about it in English.Now discuss the picture briefly in Chinese.Explain that the children are going to look for clothes they know in the picture, and color each one.? Step 5 Set homework Review the unit words.課后小結(jié):在復(fù)習(xí)中讓學(xué)生做一些小練習(xí),可以檢驗(yàn)學(xué)生的掌握情況,這樣就可以更有針對(duì)性地復(fù)習(xí)。Unit 12 I can swim Lesson 1 Teaching aims ? Structures(Review)It’s a dress.They are pants.? Structures(New)I can jump.? Vocabulary Can
jump
swim
walk
run
dance
dress
shirt
pants
sweater
socks
shoes Teaching preparation
The poster for this unit Teaching steps ? Step 1 Warm-up Explain that children are going to point to the clothes that you call out.? Step 2 Preview Explain that today the children are going to learn how to talk about some things they can do.Make sure you have all the children’s attention and jump into the air.Jump again and say, “I can jump.” Model the word jump at least twice.Now have children repeat after you in a choral drill.Then elicit the verb from individuals.Repeat the step above and present the following new vocabulary: swim, walk, run, dance.Now have children do the actions when you say the words.? Step 3 Story Have the class look at the picture as you play the tape.Play the tape again and have the children repeat the words.? Step 4 learn the words Have children open their books and direct their attention to the words that appear along the foot of the page.Play the tape, and have them point to each picture as they hear the matching word.Replay the tape while displaying your copy of the page.Without the tape, read the words together.Have the children work in pairs to read the words.? Step 5 Set homework Review the unit words.課后小結(jié):本單元的單詞為動(dòng)作類,在情景引入時(shí),可以讓學(xué)生在課堂前先跟著老師做動(dòng)作,既提高了學(xué)生的注意力,也加深了學(xué)生的印象。Lesson 2 Teaching aims ? Structures(New)I can jump.? Vocabulary Can
jump
swim
walk
run
dance
Teaching preparation Flashcards for this unit.Teaching steps ? Step 1 Review Review the words that have learned last class ? Step 2 preview Pin up the flashcards for the five verbs on the blackboard.Have children point to the matching picture when you say the word.? Step 3 Touch and say Explain to the children that they are going to look at some photographs of what animals can do.Review the sentence “ I can dance.” Have the children read after you.? Step 4 Sing the song Tell children that they are going to sing in English about things that they can do.Have children look at the pictures around the song words.Hold up your copy of the book, point to pictures at random and elicit the verbs.Play the tape without stopping and have children listen and point to the actions as they are mentioned.Play the tape again and this time have children join in.Now children sing along and do the actions as they are mentioned.? Step 5 Set homework Ask children to sing the new song to their families.課后小結(jié):在復(fù)習(xí)詞匯的時(shí)候,要大量運(yùn)用肢體動(dòng)作,學(xué)生在快樂(lè)中學(xué)習(xí)的效果很好,再結(jié)合歌曲進(jìn)行很好地復(fù)習(xí)和鞏固,學(xué)生掌握單詞很熟練。Lesson 3 Teaching aims ? Structures(Review)I can jump.? Vocabulary Can
jump
swim
walk
run
dance
xylophone
yo-yo
zebra
zoo
Teaching preparation
The flashcards for jump, run, walk, dance, and swim Teaching steps ? Step 1 Warm-up Play some music on a tape or on the radio that you know the children enjoy.Say, “Stand up and dance.” Have children stand up and dance to the music.Explain that when the music stops, they are going to stop dancing and change the action.Pause the music and have children stand still.Now say, “Walk.” Have children walk around until out start the music again and they resume dancing.Continue the activity until children have practiced all the actions and are warmed up.? Step 2 Listen and practice Play the tape, pointing to the photograph of the word.Now replay the tape and have children touch the photograph as they listen.Play the tape one more time and have children listen and repeat the word, xylophone.Repeat the procedure above for yo-yo, zebra and zoo.? Step 3 Say the rhyme Tell the children that they are going to learn a rhyme.Play the tape , the teacher acts out the rhyme while listening to it.Try to make children understand the meaning of the rhyme.Play the tape again, and encourage the children to clap their hands or act out while listening.Play the tape for the third time, have the children listen to the tape, and encourage them to say one or two words with the tape.Play the tape again and again and try to have the children act or clap their hands with the rhyme, have them shout out words or phrases.Have the children act out with the teacher wile trying to say the rhyme.? Step 4 Read and draw Have the children open their books at page 47.Have children look at the six little pictures at the side of the page.Explain that they are going to draw one of these pictures in each space.Have them draw the objects and color them according to the text.Check the answers in a class drill.? Step 5 Set homework Have the children color the pictures on page 47.課后小結(jié):歌謠的學(xué)習(xí)更好地鞏固了學(xué)生所學(xué)知識(shí);在練習(xí)中又充分的檢驗(yàn)了學(xué)生掌握知識(shí)的情況,發(fā)現(xiàn)學(xué)生掌握的比較好,但仍有個(gè)別學(xué)生需要加強(qiáng)輔導(dǎo)。Lesson 4 Teaching aims ? Structures(Review)I can jump.? Vocabulary Can
jump
swim
walk
run
dance
Teaching preparation
The flashcards for ball, square, ice cream, pants, book, cat
The poster for this unit.Teaching steps ? Step 1 Warm-up Review the rhyme from the previous lesson.Say the rhyme in a class chorus, then in groups, or chose individual student to say.? Step 2 Review with poster Review the vocabulary and structures for this unit with the poster.Have the children point to the picture when the teacher say the word.? Step 3 Read and circle Have the children look at the five illustrations on the page.Hold up your book and point to the illustrations.Elicit the verb for each one as a choral drill.Now draw children’s attention to the text below each picture.Explain that they are going to draw a circle around the structure, I can, and the correct verb.Do the first one together as an example , then have children work individual.? Step 4 Find and color Have children open their books, look at the picture and say anything they can about it in English.Explain that in the picture there are some animals.Ask children what the animals do.Explain that children are going to look for animals and clothes within the picture and color each one in a different color.Set enough time for the children to color the picture and check the exercise by having children to color the picture and check the exercise by having children hold up their books and show their pictures to the
第三篇:一年級(jí)教案(下)
左 右
【教學(xué)要求】
在生活中看關(guān)于“左右”的真實(shí)情境激發(fā)學(xué)生的學(xué)習(xí)興趣。
能初步運(yùn)用“左右”的數(shù)學(xué)知識(shí)解決實(shí)際問(wèn)題。
認(rèn)識(shí)“左右”的位置關(guān)系,體會(huì)其相對(duì)性。
【教學(xué)重點(diǎn)】
認(rèn)識(shí)“左右”的位置關(guān)系,正確確定“左右”。
【教學(xué)難點(diǎn)】
“左右”的相對(duì)性。
【教學(xué)準(zhǔn)備】
計(jì)算機(jī)課件 筆 橡皮 尺子 文具盒 小刀
【教學(xué)過(guò)程】
通過(guò)左手、右手的活動(dòng),感知自身的左與右
一.體驗(yàn)自身的“左與右”
同學(xué)們,你能說(shuō)說(shuō)左右兩只手都可以做什么嗎?
小朋友們剛才已經(jīng)熟悉了自己身體的“左”和“右”,其實(shí)生活中的“左”和“右”還有許許多多,今天我們就來(lái)確定一下“左”和“右”
二.說(shuō)說(shuō)自己的左右邊都有什么?理解左邊和右邊
1.握一握
想一想,你們知道為什么兩個(gè)人的手會(huì)交叉在一起嗎?體驗(yàn)“相對(duì)”,加強(qiáng)理解。
2.說(shuō)一說(shuō)
3.?dāng)[一擺
兩個(gè)同學(xué)合作,一個(gè)口令,一個(gè)擺,看看對(duì)左右掌握了嗎?相怎么擺就怎么擺,然后同桌互說(shuō)
總結(jié)
我們學(xué)習(xí)了什么?(左右)對(duì)!是表示方向的左和右。在生活中,我們一定要分清左和右,特別是行走時(shí),人注意靠右走。
預(yù)測(cè):有的可能會(huì)說(shuō):我左右手、有左右腿、有左右眼、有左右腳??
位置
【教學(xué)要求】
1.能夠在具體情境中,根據(jù)行列確定物體的位置。
2.培養(yǎng)觀察、分析、比較的思維能力。
3.培養(yǎng)團(tuán)結(jié)、合作、互助的精神。
【教學(xué)重點(diǎn)】根據(jù)行列確定某一物體的位置。
【教學(xué)難點(diǎn)】能用語(yǔ)言去描述某一物體的位置。
【教學(xué)過(guò)程】
一、談話引入,介紹自己的位置
首先讓學(xué)生介紹一下自己的位置,說(shuō)說(shuō)自己的前后左右都有誰(shuí)?怎樣讓別班的同學(xué)一下就找到自己?
小朋友自我介紹,教師給予鼓勵(lì)。
二、創(chuàng)設(shè)游戲活動(dòng),進(jìn)一步感知位置
1、找小動(dòng)物游戲
2、看圖回答問(wèn)題。
三、練習(xí)反饋
教師談話:在日常生活中,對(duì)號(hào)入座的機(jī)會(huì)的很多,同學(xué)們喜歡看電影嗎?今天我們就到電影院去看看
(1)展示第8頁(yè)的第4題
師:讓我們好好看看電影院的座號(hào)有什么特點(diǎn)?
生:左邊是雙數(shù),右邊是單數(shù),越往兩邊號(hào)就越大。
(2)師:那第一位小女孩拿著9排12號(hào),不知道應(yīng)該坐哪呢?誰(shuí)來(lái)幫幫他,上講臺(tái)指出。
師:你們是怎樣找到這個(gè)座位的?(生口答)
看書(shū):把剩下的小朋友找見(jiàn)座位連線
(3)全班匯報(bào)。
小結(jié):我們都給小朋友找到了座位,你瞧他們多高興呀!下面是小螞蟻給我們出的難題!出示課件:
(4)情景導(dǎo)入
師:有這么多好吃的,小螞蟻都愛(ài)吃,但它最愛(ài)吃蘋(píng)果,我們幫它想一想,小螞蟻怎樣走能吃掉蘋(píng)果?
(5)全班交流
師:同學(xué)們真聰明,想出了為么多辦法,它太感謝你們了,下面請(qǐng)你們幫助它找到其它好吃的。獨(dú)立完成,集體訂正。
十幾減9的減法
【教學(xué)目標(biāo)】
知識(shí)技能性目標(biāo):
1.通過(guò)對(duì)問(wèn)題情境的探索,使學(xué)生在已有經(jīng)驗(yàn)基礎(chǔ)上自己得出計(jì)算十幾減9的各種方法;通過(guò)比較,使學(xué)生體驗(yàn)比較簡(jiǎn)便的計(jì)算方法。
2.使學(xué)生理解十幾減9的退位減法的思維過(guò)程,并能正確進(jìn)行十幾減9的計(jì)算。
過(guò)程性目標(biāo):
1.經(jīng)歷收集信息的過(guò)程,發(fā)現(xiàn)數(shù)學(xué)問(wèn)題,初步體會(huì)生活中處處有數(shù)學(xué)。理解數(shù)學(xué)的價(jià)值。
2.初步滲透事物之間是相互聯(lián)系的觀點(diǎn)。
3.通過(guò)不同方法的選擇,體驗(yàn)獲得成功的喜悅,激發(fā)學(xué)習(xí)的興趣。
【教學(xué)重、難點(diǎn)】
1.經(jīng)歷探討計(jì)算方法的過(guò)程
2.能正確地、比較熟練地進(jìn)行十幾減9的計(jì)算
【教學(xué)過(guò)程】
一、談話引入新課,激發(fā)學(xué)習(xí)興趣
師:前幾天,我們參加了一次生動(dòng)有趣的游藝活動(dòng),活動(dòng)中有一些獎(jiǎng)品,你們想去看看嗎?
二、探索方法,解決問(wèn)題(出示錄像)
1.觀察主題圖,提出問(wèn)題
師:仔細(xì)觀察,小朋友正在進(jìn)行哪些活動(dòng)準(zhǔn)備頒發(fā)哪些獎(jiǎng)品?(觀察后指名回答)。同學(xué)們,在這幅圖里,我發(fā)現(xiàn)了很多的數(shù)學(xué)問(wèn)題,你們?cè)敢夂臀乙黄鸾鉀Q嗎?
那好,讓我們一起去看看小明和他的小伙伴們正在干什么?
師:(出示套圈圖)這是什么活動(dòng)?讓學(xué)生介紹。小明投了14個(gè)圈,有9個(gè)圈沒(méi)套中,套中了幾個(gè)?你們能幫助他解決這些數(shù)學(xué)問(wèn)題嗎?如何列式?為什么要用14-9呢?怎樣算?把你的想法告訴你小組的同學(xué)們,看哪一個(gè)小組的計(jì)算方法最多?
2.小組交流,探討算法
指名回答,教師將算法板書(shū)在黑板上。
師:請(qǐng)同學(xué)們觀察這些算法,你最喜歡哪一種?請(qǐng)用你最喜歡的方法再說(shuō)一說(shuō)這道題。
師:今后在計(jì)算的時(shí)候,你就可以選擇你最喜歡的方法進(jìn)行計(jì)算。
3.選擇算法,進(jìn)行計(jì)算
(1)老師正在發(fā)獎(jiǎng)品,數(shù)一數(shù),老師手中一共有多少個(gè)氣球?
師:同學(xué)們,仔細(xì)觀察,老師手中的氣球發(fā)生了什么變化?
你能提出一個(gè)數(shù)學(xué)問(wèn)題嗎?怎么列式?板書(shū):15-9=
等于幾?你是怎樣想的?并讓幾個(gè)學(xué)生說(shuō)出不同的計(jì)算方法。
(2)出示錄像:同學(xué)們仔細(xì)聽(tīng)故事,兔媽媽把幾個(gè)蘋(píng)果給了小羊,你能幫助小兔算出剩下的蘋(píng)果數(shù)目嗎?同桌互相說(shuō)一說(shuō),并列式:
五、游戲(出示課件)小猴回家
游戲要求:先讓學(xué)生計(jì)算出三只小猴身上的算式,然后和房子上的號(hào)碼一一配對(duì);
游戲形式:小組合作,全班訂正;
十幾減幾
【教學(xué)目標(biāo)】
1.理解“十幾減幾”的算理,學(xué)會(huì)“十幾減幾”的口算方法,正確計(jì)算“十幾減幾”的題目。
2.體驗(yàn)數(shù)學(xué)與生活的密切聯(lián)系和探索學(xué)習(xí)的樂(lè)趣。
【教學(xué)重點(diǎn)】掌握十幾減幾的口算方法,正確地計(jì)算十幾減幾的題目。
【教學(xué)難點(diǎn)】能夠運(yùn)用多種方法進(jìn)行口算并且正確率高
【教學(xué)過(guò)程】
一、復(fù)習(xí)舊知,溝通聯(lián)系
二、自主探索,學(xué)習(xí)新知
1.多媒體出示“魚(yú)缸內(nèi)金魚(yú)游動(dòng),魚(yú)缸外兩只小貓走動(dòng)觀看金魚(yú)”的畫(huà)面。首先請(qǐng)學(xué)生說(shuō)明看到了什么,讓學(xué)生描述這一生動(dòng)景象,調(diào)動(dòng)學(xué)生的興趣。
2.描述左邊小貓嘴邊出現(xiàn)“13條金魚(yú),花的8條,黑的有幾條?”的文字。右邊小貓嘴邊出現(xiàn)“13條金魚(yú),黑的5條,花的有幾條?”的文字。
3.引導(dǎo)學(xué)生講述兩只小貓對(duì)話的意思,明確要解決的問(wèn)題。
4.啟發(fā)學(xué)生根據(jù)圖意和要解決的問(wèn)題,想想自己準(zhǔn)備用什么方法解決。
5.組織小組討論,廣泛發(fā)表自己意見(jiàn)
6.組織全班同學(xué)交流,對(duì)各種方法進(jìn)行評(píng)議。
在各組討論的基礎(chǔ)上,廣泛反映出各種方法。教師要表?yè)P(yáng)同學(xué)想的方法多,能獨(dú)立發(fā)表自己的意見(jiàn)。然后,請(qǐng)同學(xué)們就出自己在解決問(wèn)題時(shí)喜歡哪種方法,并說(shuō)明理由。演示圖中三個(gè)小朋友是如何解決這些問(wèn)題的。
7.教師有導(dǎo)向性的小結(jié)
教師以參與者的語(yǔ)言,表明自己根據(jù)大家的發(fā)言很受啟發(fā),樂(lè)意運(yùn)用“想加算減”的方法,但也要肯定“破十減”等方法的合理性。
三、鞏固計(jì)算方法,繼續(xù)出示課件,完成后面的練習(xí)。
用數(shù)學(xué)
【教學(xué)要求】
1.通過(guò)本節(jié)課的教學(xué),培養(yǎng)學(xué)生認(rèn)真觀察的好習(xí)慣。
2.培養(yǎng)學(xué)生收集信息和整理信息的能力。
3.學(xué)會(huì)提出與他人不同的數(shù)學(xué)問(wèn)題。
4.能夠用所學(xué)的知識(shí)解決生活中的實(shí)際問(wèn)題。
5.培養(yǎng)學(xué)生熱愛(ài)大自然的高尚情操。
【教學(xué)重點(diǎn)】學(xué)會(huì)收集信息和處理信息并能夠運(yùn)用所學(xué)的知識(shí)正確熟練地進(jìn)行計(jì)算的能力。
【教學(xué)過(guò)程】
一、說(shuō)一說(shuō)
教師出示錄像:小刺猬采果子,采了15個(gè)果子,走一路,掉了一路,總共掉了7個(gè)果子,你知道現(xiàn)在小刺猬還有幾個(gè)果子嗎?
1.師:從錄像中你知道了什么?
2.師:你能根據(jù)圖中的信息提出問(wèn)題嗎?(教師根據(jù)學(xué)生的回答進(jìn)行板書(shū))。
問(wèn):你為什么要用這種方法算,說(shuō)說(shuō)你的理由?
等于幾你是怎樣想的?請(qǐng)同桌的同學(xué)互相說(shuō)一說(shuō),再全班說(shuō)一說(shuō)。還有沒(méi)有與他不一樣的算法嗎?
3.出示課件,通過(guò)童童幫媽媽給熊伯伯、狐貍叔叔送衣掛和夾子,體會(huì)生活中應(yīng)用數(shù)學(xué)的例子,學(xué)習(xí)用20以內(nèi)的退位減法解決生活中的相關(guān)問(wèn)題。
學(xué)生觀察:
問(wèn):
(1)從圖中你看到了什么?把你看到的說(shuō)給你的同學(xué)聽(tīng)。你發(fā)現(xiàn)了什么?
(2)你能夠根據(jù)你所看到的數(shù)學(xué)小故事幫助童童完成媽媽給的任務(wù)嗎?試一試(四人小組互說(shuō))
(3)指名說(shuō)(3――5人)
(4)你們有根據(jù)這些數(shù)學(xué)小故事列出算式嗎?計(jì)算出結(jié)果后,演示課件,幫助童童完成任務(wù)。
(5)除了剛才的這些問(wèn)題,你還能提出其它的問(wèn)題來(lái)并且列出算式嗎?討論一下,互相說(shuō)一說(shuō)。
二、練一練,出示課件“小動(dòng)物喜歡吃什么?”
整十?dāng)?shù)加一位數(shù)和相應(yīng)的減法
【教學(xué)目標(biāo)】
1.比較熟練地口算整十?dāng)?shù)加一位數(shù)和相應(yīng)的減法。
2.使學(xué)生應(yīng)用所學(xué)知識(shí)解決生活實(shí)際問(wèn)題,培養(yǎng)學(xué)生思維的靈活性。
【教學(xué)重點(diǎn)】
熟練地口算整十?dāng)?shù)加一位數(shù)和相應(yīng)的減法的口算方法,并能夠正確熟練地進(jìn)行計(jì)算。
【教學(xué)難點(diǎn)】
學(xué)會(huì)能夠用各種不同的方法進(jìn)行口算。
【教學(xué)過(guò)程】
一、復(fù)習(xí)??诖鹣旅娓黝}。
1.36里面有()個(gè)十和()個(gè)一。
2.5個(gè)十和7個(gè)一是()。
3.65里由()個(gè)十和()個(gè)一組成的。
4.2個(gè)十和5個(gè)一合起來(lái)是()。
二、新授。
1.教學(xué)例1:
(1)課件演示:媽媽買(mǎi)來(lái)很多酸奶,桌子上有30瓶,小剛拿了2瓶,媽媽一共買(mǎi)了多少瓶酸奶呢?
學(xué)生回答后,教師板書(shū):30+2=32
追問(wèn):30+2表示幾個(gè)十與幾個(gè)一,合起來(lái)是多少?
引導(dǎo)學(xué)生說(shuō)出:3個(gè)十和2個(gè)一合起來(lái)是32。
(2)從32瓶中拿走2瓶
提問(wèn):還剩多少瓶?怎樣列式?
學(xué)生回答后,教師板書(shū):32—2=30
(3)2個(gè)一加3個(gè)十一共是多少?怎樣列算式?
學(xué)生回答,教師根據(jù)學(xué)生回答板書(shū):2+30=32
(4)練習(xí):
先讓學(xué)生擺小棒,再對(duì)著擺的小棒寫(xiě)算式。
教師巡視,個(gè)別學(xué)生如果有困難,給予適當(dāng)?shù)闹笇?dǎo),學(xué)生寫(xiě)完后,指定一個(gè)學(xué)生到黑板前演示列式計(jì)算,并集體訂正。
2.教學(xué)例2
(1)根據(jù)圖中給出的信息,判斷小青蛙大概吃了多少只害蟲(chóng)?
(2)按照數(shù)的順序把空白處寫(xiě)上正確的答案:
三、鞏固練習(xí)。
1.口算下面各題。
(1)50+6,30+7,60+9,20+8
6+50,7+30,9+60,8+20
(2)90+8,20+3,50+9,70+6
98-8,23-3,59-9,76-6
說(shuō)明:卡片正面寫(xiě)50+6,背面寫(xiě)6+50,口算時(shí)先讓一名學(xué)生看正面的題目并口算得數(shù),再讓另一名學(xué)生說(shuō)出背面的題目并口算,如果學(xué)生有困難,再翻到背面讓學(xué)生看一看口算。
2.做練習(xí)八的第5題。
教師把題目抄在卡片上,指名口算得數(shù),再全班學(xué)生一齊看卡片口算得數(shù),然后讓學(xué)生把得數(shù)填在教科書(shū)上。
出示課件,觀察場(chǎng)景,幫助童童完成媽媽布置的任務(wù)。
課題:長(zhǎng)方形 正方形
教學(xué)目的
1.使學(xué)生知道長(zhǎng)方形、正方形;通過(guò)觀察和動(dòng)手操作,使學(xué)生能辨認(rèn)和區(qū)別出這兩種圖形.
2.使學(xué)生初步建立起空間觀念,培養(yǎng)學(xué)生初步的邏輯思維能力,滲透分類統(tǒng)計(jì)思想.
3.激發(fā)學(xué)生學(xué)習(xí)數(shù)學(xué)的興趣,進(jìn)行愛(ài)祖國(guó)、愛(ài)科學(xué)的思想教育.
教學(xué)重點(diǎn)和難點(diǎn)
知道長(zhǎng)方形和正方形的形狀和名稱,并能區(qū)別這兩種圖形.
教學(xué)過(guò)程
一、導(dǎo)入新課.
同學(xué)們,今天老師給大家?guī)?lái)了一位新朋友,大家鼓掌歡迎?。ǔ鍪緞?dòng)畫(huà)“認(rèn)識(shí)圖形”)
二、講授新課.
1、初步認(rèn)識(shí)長(zhǎng)方形(繼續(xù)演示動(dòng)畫(huà)“認(rèn)識(shí)圖形”).
(1)師:這是圖圖提出的第一個(gè)問(wèn)題:“圖形國(guó)是什么形狀的?”誰(shuí)來(lái)回答?
(2)教師出示國(guó)旗圖,問(wèn):國(guó)旗的面是什么形狀的?舉起數(shù)學(xué)課本、練習(xí)本問(wèn):數(shù)學(xué)課本、練習(xí)本的面是什么形狀的?再拿出一張長(zhǎng)方形彩紙,先橫著放,問(wèn):這張彩紙是什么形狀的,豎著放、斜著放呢?
(3)學(xué)生舉例.
小結(jié):以上這些物品的面,不管大,還是小,它們的形狀都可以用這樣一個(gè)圖形表示,(教師畫(huà)長(zhǎng)方形)問(wèn):這是什么圖形?(板書(shū)長(zhǎng)方形)
(4)數(shù)一數(shù)長(zhǎng)方形有幾條邊,再數(shù)一數(shù)桌上的長(zhǎng)方形紙有幾條邊,用彩筆逐一勾出四條邊.
(5)師用一定長(zhǎng)來(lái)量長(zhǎng)方形的四條邊,學(xué)生認(rèn)真觀察后,問(wèn):長(zhǎng)方形四條邊一樣長(zhǎng)嗎?哪兩條邊一樣長(zhǎng)?哪兩條邊不一樣長(zhǎng)?
小結(jié):長(zhǎng)方形四條邊不一樣長(zhǎng),對(duì)著的兩條邊一樣長(zhǎng).
(6)學(xué)生折紙,看看是不是對(duì)著的兩條邊一樣長(zhǎng).
(7)反饋練習(xí):請(qǐng)說(shuō)出幾號(hào)圖形是長(zhǎng)方形.
2、初步認(rèn)識(shí)正方形(繼續(xù)演示動(dòng)畫(huà)“認(rèn)識(shí)圖形”).
(1)這是圖圖提出的第二個(gè)問(wèn)題,誰(shuí)來(lái)回答?
(2)教師拿出一塊手絹,問(wèn):這塊手絹是什么形狀的?再舉起地板磚、正方形電光紙,問(wèn)這些東西的面是什么形狀的?斜著放呢?
(3)學(xué)生舉例.
小結(jié):以上這些物品的面不論大或是小,它們的形狀都可以畫(huà)成這樣一個(gè)圖形“□”(畫(huà)正方形),這是什么形?(板書(shū)正方形)
(4)數(shù)一數(shù)正方形有幾條邊,四條邊一樣長(zhǎng)嗎?先量一量,再折折桌上的正方形紙比一比.
(5)長(zhǎng)方形和正方形比較:①長(zhǎng)方形有幾條邊?正方形有幾條邊?②長(zhǎng)方形四條邊怎么樣?正方形四條邊怎么樣?③長(zhǎng)方形與正方形相同的地方是什么?不同的地方是什么?
教師歸納:長(zhǎng)方形有四邊條,正方形也有四條邊,這是相同的地方;不同的地方是長(zhǎng)方形對(duì)著的兩條邊相等,正方形四條邊都相等.
(6)反饋練習(xí):
用4根小棒擺一個(gè)正方形,用6根小棒擺一個(gè)長(zhǎng)方形.
教師歸納:長(zhǎng)方形沿中間虛線對(duì)折后,有的是長(zhǎng)方形,有的是正方形,為什么呢?這是根據(jù)長(zhǎng)方形邊的長(zhǎng)短確定的,這個(gè)問(wèn)題我們?cè)谝院蟮膶W(xué)習(xí)中再進(jìn)一步研究.正方形不論是大正方形還是小正方形,沿中間虛線對(duì)折后都是長(zhǎng)方形,沿正方形對(duì)角線對(duì)折后是三角形.
三、課堂練習(xí).
做一做1、2題
1.沿虛線折一折,看看正方形的邊長(zhǎng)怎么樣,長(zhǎng)方形的邊長(zhǎng)怎么樣(分組進(jìn)行).
2.說(shuō)一說(shuō),哪些物品的面是正方形的,哪些物品的面是長(zhǎng)方形的.
四、小結(jié).今天我們學(xué)了哪幾種圖形?(板書(shū):長(zhǎng)方形 正方形)
五、布置作業(yè):練習(xí)七第2、3題.
板書(shū)設(shè)計(jì)
課題:跳繩
教學(xué)目標(biāo)
1.探索并掌握兩位數(shù)減兩位數(shù)退位減的計(jì)算方法,進(jìn)一步體會(huì)計(jì)算方法的多樣化.2.發(fā)展初步的估算意識(shí)和解決生活實(shí)際問(wèn)題的能力.3.培養(yǎng)學(xué)生認(rèn)真計(jì)算反復(fù)檢驗(yàn)的好習(xí)慣.教學(xué)重點(diǎn)
幫助學(xué)生理解并掌握用豎式計(jì)算的方法.教學(xué)難點(diǎn)
掌握連續(xù)退位減法的計(jì)算方法.課前準(zhǔn)備
課件、圖片、實(shí)物投影儀.教學(xué)過(guò)程
活動(dòng)一:創(chuàng)設(shè)情境、引入新課.師:同學(xué)們,你們喜歡跳繩嗎?你能說(shuō)說(shuō)你的跳繩成績(jī)嗎?跳繩不但是一項(xiàng)很好的體育活動(dòng),它里面還藏著許多的數(shù)學(xué)問(wèn)題呢,你們發(fā)現(xiàn)了嗎?
[點(diǎn)評(píng)]利用“跳繩”這一情境導(dǎo)入新課,可以體現(xiàn)數(shù)學(xué)來(lái)源于生活實(shí)際。利用學(xué)生身邊的事情或?qū)W生感興趣的事情創(chuàng)設(shè)學(xué)習(xí)情境,可以激發(fā)學(xué)生的學(xué)習(xí)興趣.活動(dòng)二:利用跳繩的情境,討論計(jì)算方法.出示主題圖及統(tǒng)計(jì)圖表,提出數(shù)學(xué)問(wèn)題.這是三名同學(xué)跳繩情況的統(tǒng)計(jì)表,說(shuō)說(shuō)你從表中知道了些什么?
根據(jù)這張統(tǒng)計(jì)表,你能提出哪些數(shù)學(xué)問(wèn)題?
A.小東、小紅共跳多少下?三人一共跳多少下?
B.小東比小紅多跳幾下?小紅比小亮少跳幾下?
??
③要想知道“小東比小紅多跳幾下”你會(huì)解答嗎?
板書(shū):小東比小紅多跳多少下? 62—48=
[點(diǎn)評(píng)]在這一環(huán)節(jié),讓學(xué)生看懂圖的意思,在此基礎(chǔ)上提出問(wèn)題,培養(yǎng)學(xué)生從實(shí)際生活中提出問(wèn)題的能力,體會(huì)數(shù)學(xué)問(wèn)題從生活中來(lái)。同時(shí)學(xué)生自己提出的問(wèn)題更樂(lè)于自己解決.2.根據(jù)算式,合理進(jìn)行估算.師:請(qǐng)你估計(jì)一下,小東比小紅多跳幾下?說(shuō)說(shuō)你是怎樣估算的?
(培養(yǎng)學(xué)生的估算意識(shí).)
3.探索算法,合作交流.(1)學(xué)生獨(dú)立思考算法,試算62-48=()
[點(diǎn)評(píng)]在這個(gè)環(huán)節(jié)中,學(xué)生自己探索計(jì)算62-48的方法,發(fā)揮了學(xué)生的主體性,讓學(xué)生親身經(jīng)歷知識(shí)結(jié)論的形成過(guò)程,發(fā)展了學(xué)生的思維.算法多樣化充分關(guān)注學(xué)生的個(gè)體差異,讓學(xué)生根據(jù)自己的情況在原有基礎(chǔ)上提高,又注意了算法的優(yōu)化,使學(xué)生從比較中選擇更簡(jiǎn)便的方法.學(xué)生可根據(jù)自己的實(shí)際靈活處理,在口算與豎式中任選一種.(2)將全班分4人小組交流算法,組長(zhǎng)統(tǒng)計(jì)算法.在全班評(píng)選想出算法最多的小組.[點(diǎn)評(píng)]進(jìn)行小組之間的競(jìng)爭(zhēng),可以極大地調(diào)動(dòng)學(xué)生的學(xué)習(xí)積極性,提高學(xué)生的主動(dòng)參與意識(shí).(3)全班學(xué)生交流算法.算法一:62-40=22 算法三:62-42=20
22-8=14
20-6=14
算法二:62-50=12 算法四:58-48=10
12+2=14
10+4=14
師:好多同學(xué)都能口算出算式的結(jié)果,除了口算你還能用筆算的方法計(jì)算嗎?
算法五:用豎式計(jì)算.我發(fā)現(xiàn)同學(xué)們筆算時(shí)有兩種結(jié)果,大家看:一種是62減48等于14;
另一種是62減48等于24.到底哪一個(gè)結(jié)果是正確的呢?我們一起擺小棒驗(yàn)證一下
[點(diǎn)評(píng)]學(xué)生通過(guò)數(shù)小棒,直觀感知當(dāng)個(gè)位不夠減時(shí)需再十位借“1”的意義.通常學(xué)生先擺62根小棒,再?gòu)?2根里去掉48根,先去掉8根,2根減8根不夠減,就從6捆中拿出一捆拆開(kāi)與2根合起來(lái),從12里去掉8根還剩4根,原來(lái)有6捆,拿出1捆后還剩5捆,再去掉4捆剩1捆,從而得出結(jié)論62根減48根,還剩14根.4.試一試.①小紅比小亮少跳幾下? □○□=□(下)
②小亮比小東多跳幾下? □○□=□(下)
看圖列出算式,運(yùn)用自己喜歡的方法計(jì)算.5.想一想.趙老師跳了100下,你能知道老師比小紅多跳幾下嗎?
獨(dú)立列式.板書(shū):100-48=
估算得數(shù).說(shuō)說(shuō)你是怎樣估算的?
學(xué)生獨(dú)立解答,小組討論交流.①98-48=50 ②99-48=51 ③100-50=50 ④100-40=60
50+2=52
51+1=52
50+2=52
60-8=52
⑤豎式計(jì)算:
你能說(shuō)說(shuō)計(jì)算過(guò)程嗎?
活動(dòng)三:師生共同總結(jié)收獲.師:這節(jié)課你有什么收獲?做減法豎式時(shí)要注意什么?
生:先把相同數(shù)位上的數(shù)對(duì)齊,再?gòu)膫€(gè)位減起.個(gè)位不夠減,從十位退1,在個(gè)位上加10再減.[點(diǎn)評(píng)]讓學(xué)生自己總結(jié)計(jì)算方法,并在相互交流中不斷完善自己的方法,培養(yǎng)學(xué)生的創(chuàng)新意識(shí).鞏固練習(xí)
1.用豎式計(jì)算.85-58=
44-27=
80-55=
64-9=
2.林林帶了50元錢(qián)去買(mǎi)一個(gè)羽毛球拍,他花了多少錢(qián)?
送小老虎回家.【演示動(dòng)畫(huà)“送小老虎回家”】
板書(shū)設(shè)計(jì)
小小運(yùn)動(dòng)會(huì)
教學(xué)目標(biāo)
體會(huì)數(shù)學(xué)與日常生活的密切聯(lián)系.
能利用100以內(nèi)的加減法解決實(shí)際問(wèn)題,發(fā)展提出問(wèn)題、解決問(wèn)題的意識(shí)和能力.
加強(qiáng)對(duì)圖形的認(rèn)識(shí),能利用圖形設(shè)計(jì)美麗的圖案.
教學(xué)重點(diǎn)
提高學(xué)生綜合運(yùn)用知識(shí)解決問(wèn)題的能力
教學(xué)難點(diǎn)
解決開(kāi)放性問(wèn)題時(shí),如何設(shè)置問(wèn)題解決問(wèn)題.
教學(xué)準(zhǔn)備
學(xué)生準(zhǔn)備:學(xué)習(xí)用具(三角形、平行四邊形、正六邊形、梯形、長(zhǎng)方形、正方形)
教師準(zhǔn)備:多媒體課件、小動(dòng)物圖片.
教學(xué)過(guò)程
活動(dòng)一:創(chuàng)設(shè)情景,激發(fā)興趣.(出示主題圖1)
導(dǎo)入:“今天森林王國(guó)要舉辦一年一度的春季運(yùn)動(dòng)會(huì),你們想看看嗎?”
(1)師:“瞧,運(yùn)動(dòng)會(huì)開(kāi)幕了,運(yùn)動(dòng)場(chǎng)上多熱鬧啊!有那么多小動(dòng)物都來(lái)參加運(yùn)動(dòng)會(huì),你能說(shuō)出哪些小動(dòng)物參加了運(yùn)動(dòng)會(huì)嗎?”
(2)師:“在蔚藍(lán)的天空中你發(fā)現(xiàn)了什么?”(學(xué)生一般先說(shuō)出天空中的鳥(niǎo)類和昆蟲(chóng)的名字,然后引導(dǎo)學(xué)生觀察它們所組成的圖形:圓、長(zhǎng)方形、正方形和三角形并讓學(xué)生邊說(shuō)邊到前面指一指.)
[點(diǎn)評(píng)] 通過(guò)欣賞美麗的造型激發(fā)學(xué)生的學(xué)習(xí)熱情并進(jìn)一步認(rèn)識(shí)長(zhǎng)方形、正方形、三角形和圓.
(3)師:“天空中這么美麗,運(yùn)動(dòng)場(chǎng)上更是沸沸揚(yáng)揚(yáng),看小動(dòng)物們都在進(jìn)行哪些項(xiàng)目的比賽?你從中發(fā)現(xiàn)了什么?”(有18只小兔跑步,34只小狗跳繩,9只袋鼠跳遠(yuǎn)和27只小猴子在爬樹(shù).)
師:“通過(guò)看圖觀察,能提出什么問(wèn)題?”
生:一共有多少只小動(dòng)物參加了這次運(yùn)動(dòng)會(huì)?
生:小狗比小猴多幾只?
生:袋鼠比小兔多幾只?
生:小兔和小猴共有多少只?
??
學(xué)生邊提問(wèn)題老師邊出示.
[點(diǎn)評(píng)] 培養(yǎng)學(xué)生的觀察能力和提問(wèn)題的意識(shí),并進(jìn)一步鞏固100以內(nèi)加減法的計(jì)算.
活動(dòng)二:通過(guò)“動(dòng)物跳繩比賽”的情景,創(chuàng)設(shè)開(kāi)放性的問(wèn)題.
小兔也想來(lái)出題可以嗎?
小兔說(shuō):小狗跳了16下,我比小狗多跳34下,同學(xué)們猜一猜我跳幾下?(師邊說(shuō)邊將小狗教具貼于黑板,下面寫(xiě)16下,在小兔教具,下寫(xiě)多34下.)
生:小兔跳了50下.
師:你怎么知道呢?
生:因?yàn)樾⊥帽刃」范嗵?4下,16+34=50所以小兔跳50下.
師:如果小兔跳50下那他還可以怎么說(shuō)?
生:小狗跳16下,小狗比我少跳34下,我跳多少下?
(在小兔下面寫(xiě)50下)
2.師:小袋鼠也參加了跳繩比賽,它也想讓大家猜一猜它跳了幾下,你猜猜,它有可能怎樣說(shuō)?小組討論看那個(gè)小組提出的問(wèn)題最多最妙?
生:我跳得比小狗多一些比小兔子少很多,我跳得比他們倆的總和還多6,請(qǐng)問(wèn)我跳了幾下?
我跳的剛好是小兔比小狗多的數(shù)猜猜我跳幾下......[點(diǎn)評(píng)] 調(diào)動(dòng)學(xué)生的參與意識(shí),培養(yǎng)學(xué)生的創(chuàng)新精神.
3.老師也想出題可以嗎?(18-9)你能為我的算式找一個(gè)問(wèn)題嗎?
生:小兔比袋鼠多幾只?袋鼠比小兔少幾只?
師:生活中有什么問(wèn)題也能用這個(gè)算是來(lái)解答呢?先想一想,再四人一組討論一下,看看那個(gè)小組提的問(wèn)題是生活中常遇到的問(wèn)題?
生:有18支鉛筆,用去9支,還剩多少只?
生:媽媽有18個(gè)蘋(píng)果,我有9個(gè),我比媽媽少幾個(gè)?
生:有18只小兔,9只袋鼠,再跑來(lái)幾只袋鼠,就和小兔一樣多了???
[點(diǎn)評(píng)] 加深數(shù)學(xué)與生活的聯(lián)系,使解題思路多樣化,開(kāi)拓學(xué)生的思維,給他們一個(gè)想象的平臺(tái),把創(chuàng)新導(dǎo)向生活.
活動(dòng)三:學(xué)生用長(zhǎng)方形、正方形、三角形、圓為運(yùn)動(dòng)員設(shè)計(jì)獎(jiǎng)杯.
(1)師:運(yùn)動(dòng)場(chǎng)上運(yùn)動(dòng)員的比賽正在激烈的進(jìn)行,森林之王正為給運(yùn)動(dòng)員發(fā)什么獎(jiǎng)杯而發(fā)愁,你愿意幫忙嗎?(愿意)
(2)學(xué)生設(shè)計(jì)獎(jiǎng)杯,個(gè)別同學(xué)對(duì)獎(jiǎng)杯不夠熟悉,建議(出示獎(jiǎng)杯圖片)
(3)展示學(xué)生作品,互相交流.例如:
[點(diǎn)評(píng)] 進(jìn)一步認(rèn)識(shí)圖形,培養(yǎng)合作精神.
活動(dòng)四:(出示主題圖2),設(shè)計(jì)乘車方案.
1.師:運(yùn)動(dòng)會(huì)結(jié)束了,運(yùn)動(dòng)員要乘車回家了.
有兩輛車每輛最多只能坐50人,夠坐嗎?
2.同桌討論,把夠與不夠的理由說(shuō)給你的同桌聽(tīng).
3.讓你安排座位,你打算讓誰(shuí)和誰(shuí)坐再一起呢?為什么?小組交流.
4.學(xué)生反饋:
小狗和小袋鼠同坐,小兔和小猴同坐,它們兩個(gè)起來(lái)都不超過(guò)50只.
小兔和小狗同坐,多兩只可以上另外一車.
③ 小狗和小猴同坐,4只小狗和7只小猴上另外一車.等等.
[點(diǎn)評(píng)]復(fù)習(xí)100以內(nèi)加減法的估算,給學(xué)生提供一個(gè)發(fā)展發(fā)散思維的空間.
課堂小結(jié)
同學(xué)們小動(dòng)物們的運(yùn)動(dòng)會(huì)開(kāi)得多有意思呀!你們的問(wèn)題也很精彩.再過(guò)幾天我們學(xué)校的春季運(yùn)動(dòng)會(huì)就要開(kāi)始了,希望你們都能積極參加,運(yùn)動(dòng)會(huì)上仔細(xì)觀察,看看你能從學(xué)校運(yùn)動(dòng)會(huì)上發(fā)現(xiàn)什么問(wèn)題?把它記錄下來(lái).
板書(shū)設(shè)計(jì)
讀數(shù)、寫(xiě)數(shù)
【教學(xué)目標(biāo)】
1.讓學(xué)生初步理解個(gè)位、十位上的數(shù)所表示的意義,激發(fā)學(xué)生主動(dòng)探究的欲望。
2.能正確地讀、寫(xiě)出100以內(nèi)的各數(shù)。
【教學(xué)重點(diǎn)】讀數(shù)與寫(xiě)數(shù)的方法。
【教學(xué)難點(diǎn)】能正確地讀、寫(xiě)出100以內(nèi)的各數(shù)。
【教學(xué)過(guò)程】
一、新授課
1.?dāng)?shù)一數(shù)有多少根小木棍 ?
(1)一個(gè)一個(gè)地?cái)?shù)。(2)十個(gè)十個(gè)地?cái)?shù)。2.學(xué)習(xí)整十?dāng)?shù)和非整十?dāng)?shù)
(1)出示課件,學(xué)習(xí)整十?dāng)?shù),完成相關(guān)練習(xí)
()個(gè)一是一十,十里面有()個(gè)一。()個(gè)十是一百,一百里面有((2)出示課件,學(xué)習(xí)非整十?dāng)?shù)。)個(gè)十。
一個(gè)十和2個(gè)一組成()。十和5個(gè)一組成()。75里面有()個(gè)十和()個(gè)一。
3.教師報(bào)數(shù),學(xué)生擺小棒16、25、50、68.
二、活動(dòng)二,通過(guò)計(jì)數(shù)器加深認(rèn)識(shí)數(shù)的讀寫(xiě)。
1.出示計(jì)數(shù)器。十位、個(gè)位
教師:計(jì)數(shù)器從右邊起,第一位叫個(gè)位,第二位叫十位,并在計(jì)數(shù)器分別貼上。
2.教師出示2捆鉛筆和4枝鉛筆。
這里共有幾枝鉛筆?(有24枝),有幾個(gè)十枝和幾個(gè)一枝,(2個(gè)十枝和4個(gè)一枝),學(xué)生回答后,教師分別把2捆鉛筆和4枝鉛筆分別掛在十位和個(gè)位上,接著問(wèn):“計(jì)數(shù)器上應(yīng)該怎樣表示呢?”啟發(fā)學(xué)生說(shuō)出2捆鉛筆表示2個(gè)十,在十位上撥2顆珠子,4枝鉛筆表示4個(gè)一,在個(gè)位上撥4個(gè)珠子表示。
寫(xiě)數(shù)時(shí),要先寫(xiě)十位,再寫(xiě)個(gè)位。十位上是幾,就寫(xiě)幾;個(gè)位是幾,就寫(xiě)幾,這個(gè)數(shù)寫(xiě)作“24”。
讀數(shù)時(shí),先讀十位數(shù),再讀個(gè)位數(shù)。十位上是幾,就讀幾十;個(gè)位是幾,就讀幾,這個(gè)數(shù)讀作二十四。
3.小結(jié)。
寫(xiě)數(shù)、讀數(shù)都要從高位起,按數(shù)位順序?qū)懀瑐€(gè)位或十位上一個(gè)也沒(méi)有寫(xiě)數(shù)時(shí)要寫(xiě)“0”占位。
三、鞏固練習(xí)。
“做一做”第2題。
學(xué)生獨(dú)立完成,教師提問(wèn)個(gè)別同學(xué):該如何寫(xiě)數(shù),你是怎么想的?集體訂正。
兩位數(shù)減一位數(shù)和整十?dāng)?shù)(不退位)
【教學(xué)目標(biāo)】
1.使學(xué)生學(xué)會(huì)兩位數(shù)減一位數(shù),整十?dāng)?shù)不退位減法的口算方法,并能正確的進(jìn)行口算。
2.使學(xué)生掌握兩位數(shù)減一位數(shù)、整十?dāng)?shù)的思維過(guò)程,提高計(jì)算能力。
教學(xué)重點(diǎn):掌握計(jì)算方法,提高計(jì)算能力。
教學(xué)準(zhǔn)備:課件。
教學(xué)過(guò)程:
一、談話引入,激發(fā)學(xué)生學(xué)習(xí)興趣
師:六一快到了,很多小朋友都想了很多的方式來(lái)慶祝,有的小朋友想去公園,有的小朋友想用自己攢的零花錢(qián)去買(mǎi)玩具呢,我們也和他們一起去看看吧!(電腦出示玩具店的貨架和玩具的標(biāo)價(jià)。)
二、自主探索,提出問(wèn)題。
1.仔細(xì)看圖,提出問(wèn)題
師:看貨架上都有哪些玩具?你喜歡什么玩具?你從圖上知道了哪些信息?(觀察后指名回答。)
師:貨架下的兩個(gè)小朋友在說(shuō)什么?你知道了什么信息?
師:怎樣才知道左邊的小朋友買(mǎi)大象玩具后還剩多少元?右邊的小朋友還差多少元呢?(用減法算)
師:你知道這么列式嗎?(師根據(jù)生回答板書(shū)算式)
師:大家會(huì)算上面的算式嗎?先在小組里擺一擺,算一算。
2.分組操作,形成思維。
學(xué)生擺小棒,教師巡回指導(dǎo)學(xué)生操作。
3.信息反饋,抽象算法。
師:大家擺出了上面兩道題的得數(shù)嗎?誰(shuí)來(lái)說(shuō)一說(shuō)是怎樣擺的?
師:誰(shuí)來(lái)說(shuō)一說(shuō)35-20又是怎樣擺出來(lái)的呢?
師根據(jù)學(xué)生說(shuō)的板書(shū)算法。
師:這兩種算法有什么不同?
4.小結(jié)算法。
師:你能根據(jù)剛才擺小棒的過(guò)程,說(shuō)一說(shuō)兩位數(shù)減一位數(shù)和整十?dāng)?shù)(不退位)的計(jì)算方法嗎?
師:同學(xué)們可真棒,我們?cè)谟?jì)算時(shí)一定要看清楚是在個(gè)位上去減還是在十位上去減。
三、鞏固練習(xí)。
1.完成P68的做一做的第一題
要求:
1、獨(dú)立計(jì)算,集體訂正
2.指名說(shuō)一說(shuō)你是怎么算的?
3.獨(dú)立完成P69練習(xí)十二的1—3題。
兩位數(shù)減一位數(shù)的退位減法
【教學(xué)目標(biāo)】
1.掌握兩位數(shù)件一位數(shù)退位減法的計(jì)算方法,能正確的進(jìn)行退位減法的計(jì)算。
2.經(jīng)歷探索兩位數(shù)減一位數(shù)退位減法計(jì)算方法的過(guò)程。
3.感受退位減法與生活實(shí)際生活的緊密聯(lián)系,體會(huì)退位減法在生活中的作用。
【教學(xué)重點(diǎn)】掌握兩位數(shù)減一位數(shù)的退位減法。
【教學(xué)過(guò)程】
一、復(fù)習(xí)準(zhǔn)備
1.口算
2.計(jì)算后讓學(xué)生說(shuō)一說(shuō)自己的算法。
二、引入新課,探索規(guī)律
1.引入
師:上面有多少根木棍?現(xiàn)在拿走8根木棍,還剩多少根?
讓學(xué)生討論,5比8根少,不夠了,怎么辦呢?同學(xué)們,你們會(huì)算嗎?
2.下面我們看看小烏龜是怎樣算這樣的題目的:
出示錄像:
師:看過(guò)小烏龜計(jì)算34-6,你學(xué)到了什么,你在計(jì)算45-8的時(shí)候是不是也用這種方法呢?如果不是,你是怎么算的?
讓學(xué)生思考并說(shuō)說(shuō)計(jì)算的方法。
師總結(jié):我們已經(jīng)會(huì)計(jì)算20以內(nèi)退位減法,運(yùn)用這種方法我們可以計(jì)算100以內(nèi)兩位數(shù)減一位數(shù)的退位減法。
三、自主探索
1.引導(dǎo)學(xué)生從問(wèn)題情景中抽象出減法算式。課件出示:第67頁(yè)例1中的玩具貨架圖。
師:在例1的學(xué)習(xí)中我們學(xué)會(huì)了根據(jù)貨架上玩具單價(jià)解決“有35元錢(qián),買(mǎi)一個(gè)大象玩具,還剩多少元?”和“有20元錢(qián),買(mǎi)一個(gè)布娃娃,還差多少元?”等問(wèn)題,圖上還告訴我們哪些有用的信息?
師:圖上左邊的小朋友說(shuō),我有8元錢(qián),想買(mǎi)一輛單價(jià)36元的玩具汽車,還要攢多少元才夠,你知道怎么樣算才知道還要攢多少錢(qián)嗎?
根據(jù)學(xué)生的回答,教師在黑板上板書(shū)算式:36-8=?
2.引導(dǎo)學(xué)生探索計(jì)算方法。
指導(dǎo)學(xué)生擺小棒。學(xué)生分組擺小棒,并讓他們邊擺邊討論計(jì)算的方法。
師總結(jié)算法:剛才同學(xué)們?cè)谛〗M中討論出了幾種算法,真不錯(cuò)。在以后的計(jì)算中,你喜歡用那種方法就用那種方法計(jì)算。
四、鞏固練習(xí)
五、課堂作業(yè)
1.完成練習(xí)十二的第5題。
先由學(xué)生獨(dú)立計(jì)算,然后集體訂正答案,訂正時(shí)說(shuō)一說(shuō)81-4和60-3的計(jì)算過(guò)程和方法,讓他們進(jìn)一步感受退位減的過(guò)程。
2.完成練習(xí)十二的第8題
先讓學(xué)生看明確計(jì)算任務(wù),然后由學(xué)生獨(dú)立計(jì)算各題的差,最后集體訂正得數(shù)。
六、課堂小結(jié)
1.小結(jié)計(jì)算方法。
認(rèn)識(shí)時(shí)間
【教學(xué)目標(biāo)】
1.知道大格刻度對(duì)應(yīng)分時(shí)表示幾分,會(huì)正確讀出、寫(xiě)出鐘面上的時(shí)間,并能根據(jù)時(shí)間撥出時(shí)針和分針。
2.讓學(xué)生自己探索看時(shí)間的方法,掌握時(shí)針走過(guò)幾,就是幾時(shí)多,分針走過(guò)幾小格就是幾分。
3.通過(guò)觀察時(shí)針和分針走的關(guān)系,知道1時(shí)=60分,理解幾時(shí)半就是幾時(shí)30分。
4.體會(huì)時(shí)間與生活的密切聯(lián)系,培養(yǎng)學(xué)生珍惜時(shí)間的思想感情。
【教學(xué)重點(diǎn)】正確讀出、寫(xiě)出幾時(shí)幾分,會(huì)撥幾時(shí)幾分。
【教學(xué)難點(diǎn)】讀出接近整時(shí)的時(shí)間,比較快速地說(shuō)出幾分。
【教學(xué)過(guò)程】
(一)生活質(zhì)疑,導(dǎo)入新課
我們已經(jīng)會(huì)看幾時(shí)和幾時(shí)半,但是在生活中,我們還會(huì)看到另外的時(shí)間,例如,我們每天是什么時(shí)候開(kāi)始上課的?什么時(shí)候下課休息的等等。
這節(jié)課我們就來(lái)進(jìn)一步認(rèn)識(shí)幾時(shí)幾分這樣的時(shí)間,好嗎?(板書(shū)課題:認(rèn)識(shí)時(shí)間)
(二)探究學(xué)習(xí)
1.出示課件,認(rèn)識(shí)60小格
師:要正確讀出時(shí)間,我們必須了解鐘面。(教師出示圖例或?qū)嵨铮┱?qǐng)你說(shuō)一說(shuō),你在這個(gè)鐘面上發(fā)現(xiàn)了什么?把你的發(fā)現(xiàn)和同桌說(shuō)一說(shuō)。
學(xué)生可能說(shuō)出:
(1)每個(gè)大格里有5個(gè)小格,教師問(wèn):你是怎么知道的?學(xué)生可能說(shuō)一格一格數(shù)的。
(2)共有60個(gè)小格,教師問(wèn):你是怎么知道的?學(xué)生可能不知道如何快速的說(shuō)出。
教師出示課件進(jìn)行驗(yàn)證。
2.認(rèn)識(shí)幾分
師:分針走一小格是1分,時(shí)針走一大格是1時(shí)。
問(wèn)1:再仔細(xì)看看時(shí)針,當(dāng)時(shí)針走一大格的時(shí)候,分針走了多少呢?
問(wèn)2:那么分針走1大格是幾分?你是怎么想的?分針從12走到2是幾分?分針從12走到每個(gè)數(shù)字各是幾分,你能算出來(lái) 嗎?(寫(xiě)在練習(xí)紙上)想想怎么能很快記住每個(gè)數(shù)字所表示的幾分。
3.繼續(xù)認(rèn)識(shí)1時(shí)=60分
我們剛才已經(jīng)知道,分針走一圈,時(shí)針會(huì)走一大格?那分針走一圈是幾分?時(shí)針走一大格是幾時(shí)?這說(shuō)明1時(shí)和60分有什么關(guān)系?(板書(shū):1時(shí)=60分)
小結(jié):我們知道了1時(shí)=60分,也知道了分針從12走到每個(gè)數(shù)字各表示幾分了。
4、學(xué)習(xí)時(shí)間
問(wèn):現(xiàn)在你能讀出時(shí)鐘上的時(shí)間嗎?
教師小結(jié):先看時(shí)針,時(shí)針剛剛走過(guò)幾就是幾時(shí)多,再看分針,分針走了幾小格就是幾分。
小朋友很能干,下面我們看看這些小朋友的作息時(shí)間是怎么樣的?你能填出自己的作息時(shí)間表嗎?
(三)鞏固練習(xí)
1.看看小斌是怎樣按時(shí)上學(xué)的,同學(xué)們應(yīng)該怎樣做呢?
2.做一做
問(wèn):你覺(jué)得一分鐘長(zhǎng)嗎?讓學(xué)生體會(huì)珍惜一分鐘的思想感情。
問(wèn):這幾個(gè)時(shí)間中,你最喜歡哪一個(gè)?為什么?這時(shí),再過(guò)10分是幾時(shí)幾分?15分鐘前是幾時(shí)幾分?再過(guò)7分又是幾時(shí)幾分?
(四)課堂總結(jié)
今天你學(xué)到了什么知識(shí)?怎樣學(xué)到的?下課時(shí)間到了,請(qǐng)小朋友們看現(xiàn)在的時(shí)間是多少?下節(jié)上課的時(shí)間是多少呢?回家后,把你上午和下午放學(xué)到家的時(shí)間記下來(lái)好嗎?
找規(guī)律
【教學(xué)目標(biāo)】
1.通過(guò)物品的有序排列,使學(xué)生初步認(rèn)識(shí)簡(jiǎn)單的排列規(guī)律,會(huì)根據(jù)規(guī)律指出下一個(gè)物體或下一個(gè)數(shù)字。
2.通過(guò)觀察、擺學(xué)具的活動(dòng),培養(yǎng)學(xué)生的實(shí)踐動(dòng)手能力,激發(fā)創(chuàng)新意識(shí)。
3.使學(xué)生在數(shù)學(xué)活動(dòng)中體會(huì)數(shù)學(xué)的價(jià)值,體會(huì)規(guī)律的美和創(chuàng)造的快樂(lè),增強(qiáng)學(xué)習(xí)數(shù)學(xué)的興趣。
【教學(xué)重點(diǎn)】學(xué)生通過(guò)實(shí)踐活動(dòng)能發(fā)現(xiàn)事物的規(guī)律。
【教學(xué)過(guò)程】
一、展示情景,引入課題
1.師:“六·一”到了,學(xué)校組織聯(lián)歡會(huì),這是同學(xué)們布置的會(huì)場(chǎng),一起來(lái)看看吧。
2.課件出示主題圖。
仔細(xì)觀察,說(shuō)說(shuō)你看到了什么?又發(fā)現(xiàn)了什么規(guī)律?學(xué)生回答。
(1)課件出示彩旗圖。首先來(lái)研究彩旗圖中的規(guī)律。
生:因?yàn)樾∑焓前凑占t色、粉色這樣的順序一直擺下去的,所以粉旗的后面是紅旗。
師:如果讓你給彩旗分分組,好把彩旗排列的規(guī)律看得更清楚。你準(zhǔn)備怎樣分?誰(shuí)來(lái)指指?為什么這樣分?(小旗就是這樣一組一組重復(fù)出現(xiàn)的,規(guī)律就看得特別清楚了。)
(2)將錄像停止觀察彩花和燈籠圖。
師:彩旗的規(guī)律我們已經(jīng)找到了,那么燈籠的擺放又有什么規(guī)律呢?下一朵彩花下一個(gè)燈籠會(huì)是什么顏色?該怎么給它們分組呢?把你發(fā)現(xiàn)的秘密小聲地告訴同桌。
師:下一朵花是什么顏色的?舉起你的發(fā)現(xiàn)。下一個(gè)燈籠呢?該怎么分組呢?
二、學(xué)習(xí)較復(fù)雜圖形數(shù)字的排列規(guī)律
1.根據(jù)形狀和顏色的變化發(fā)現(xiàn)物體的排列規(guī)律。
同學(xué)們可真能干,一下子就找到了彩旗、彩花和燈籠排列的規(guī)律,根據(jù)上面研究的情況,你填一下“下一個(gè)圖形會(huì)是什么?它是什么顏色的呢?”
學(xué)生舉手回答,集體訂正時(shí)說(shuō)說(shuō)這樣填的理由。
2.根據(jù)物體數(shù)量的變化發(fā)現(xiàn)物體和數(shù)字的排列規(guī)律
師:小丑要寫(xiě)出10個(gè)有規(guī)律的數(shù)字,你能幫幫它嗎?
師:下面的圖形排列有一定的規(guī)律,試著擺一擺。小組學(xué)生交流,派代表進(jìn)行說(shuō)明。
三、教師總結(jié)
規(guī)律在我們的生活中真的是無(wú)處不在呀,有規(guī)律的事物常給人一種美的感覺(jué),你能發(fā)現(xiàn)藏在我們身邊的規(guī)律嗎?生回答。(教室的天花板、地板、黑板上的獎(jiǎng)品、自己的衣服。)
第四篇:北師大版一年級(jí)數(shù)學(xué)下教學(xué)計(jì)劃
一年級(jí)數(shù)學(xué)下冊(cè)教學(xué)工作計(jì)劃
一
(二)班
一、學(xué)情分析:
本班共有48名同學(xué)。在經(jīng)過(guò)了一個(gè)學(xué)期的數(shù)學(xué)學(xué)習(xí)后,基本知識(shí)、技能方面基本上已經(jīng)達(dá)到學(xué)習(xí)的目標(biāo),對(duì)學(xué)習(xí)數(shù)學(xué)有著一定的興趣,樂(lè)于參加學(xué)習(xí)活動(dòng)中去。
二、教學(xué)目標(biāo): 本冊(cè)教材的教學(xué)目標(biāo):
(一)數(shù)與代數(shù)
1、第一單元“加與減
(一)”。是學(xué)習(xí)20以內(nèi)的退位減法,降低了一年級(jí)上學(xué)期孩子們學(xué)習(xí)數(shù)學(xué)的難度。退位減法是一個(gè)難點(diǎn),學(xué)生掌握比較慢,但同時(shí)也是今后豎式減法的重點(diǎn)所在。所以在介紹的:數(shù)小棒、倒著數(shù)數(shù)、湊十法、看減法想加法、借助計(jì)數(shù)器??這些方法中,孩子們喜歡用什么方法不統(tǒng)一要求,自己怎么快怎么算,但是要介紹這些方法。
2、第三單元“生活中的數(shù)”。通過(guò)數(shù)鉛筆等活動(dòng),經(jīng)歷從具體情境中抽象出數(shù)的模型的過(guò)程,會(huì)數(shù),會(huì)讀,會(huì)寫(xiě)100以內(nèi)的數(shù),在具體情境中把握數(shù)的相對(duì)大小關(guān)系,能夠運(yùn)用數(shù)進(jìn)行表達(dá)和交流,體會(huì)數(shù)與日常生活的密切聯(lián)系。
3、第五單元“加與減
(二)”,第六單元“加與減
(三)” 在“加與減”的學(xué)習(xí)中,結(jié)合生活情境,學(xué)生將經(jīng)歷從具體情境中抽象出加減法算式的過(guò)程,進(jìn)一步體會(huì)加減法的意義;探索并掌握100以內(nèi)加減法(包括不進(jìn)位、不退位與進(jìn)位、退位)和連加、連減、加減混合的計(jì)算方法,并能正確計(jì)算;能根據(jù)具體問(wèn)題,估計(jì)運(yùn)算的結(jié)果;初步學(xué)會(huì)應(yīng)用加減法解決生活中簡(jiǎn)單問(wèn)題,感受加減法與日常生活的密切聯(lián)系。
(二)空間與圖形
1、第二單元“觀察物體”。學(xué)生將通過(guò)觀察身邊的簡(jiǎn)單物體,初步體會(huì)從不同角度觀察物體所看到的形狀可能是不同的發(fā)展空間觀念,2、第四單元“有趣的圖形”。學(xué)生將經(jīng)歷從上學(xué)期立體圖形到現(xiàn)在平面圖形的過(guò)程,認(rèn)識(shí)長(zhǎng)方形,正方形,三角形,圓等平面圖形,通過(guò)動(dòng)手做的活動(dòng),進(jìn)一步認(rèn)識(shí)平面圖形,七巧板是孩子喜歡的拼圖,用它可以拼出很多的圖形,讓孩子們自己動(dòng)手拼,積累數(shù)學(xué)活動(dòng)經(jīng)驗(yàn),發(fā)展空間觀念能設(shè)計(jì)有趣的圖案。
(三)實(shí)踐活動(dòng)
本冊(cè)教材在第五單元之后安排了一個(gè)大的實(shí)踐活動(dòng),即“分扣子”和“填數(shù)游戲”。旨在綜合運(yùn)用所學(xué)的知識(shí),從根據(jù)事物的非本質(zhì)的、表面的特征把事物進(jìn)行分類,發(fā)展到根據(jù)客觀事物抽象、本質(zhì)的特征進(jìn)行不同方式的分類,促進(jìn)孩子邏輯思維能力的發(fā)展。同時(shí),安排學(xué)生填數(shù)游戲,旨在對(duì)孩子的口算能力、邏輯思維能力和觀察能力的訓(xùn)練,感受數(shù)學(xué)的樂(lè)趣!
三、教學(xué)重點(diǎn)和難點(diǎn)
這冊(cè)教材的教學(xué)重點(diǎn)是:100以內(nèi)數(shù)的認(rèn)識(shí),20以內(nèi)的退位減法和100以內(nèi)的加減法口算。在學(xué)生掌握了20以內(nèi)各數(shù)的基礎(chǔ)上,這冊(cè)教材把認(rèn)數(shù)的范圍擴(kuò)大到100,使學(xué)生初步理解數(shù)位的概念,學(xué)會(huì)100以內(nèi)數(shù)的讀法和寫(xiě)法,弄清100以內(nèi)數(shù)的組成和大小,會(huì)用這些數(shù)來(lái)表達(dá)和交流,形成初步的數(shù)感。100以內(nèi)的加、減法,分為口算和筆算兩部分。這冊(cè)教材出現(xiàn)的是口算部分,即兩位數(shù)加、減一位數(shù)和整十?dāng)?shù)口算。這些口算在日常生活中有廣泛的應(yīng)用,又是進(jìn)一步學(xué)習(xí)計(jì)算的基礎(chǔ),因此,應(yīng)該讓學(xué)生很好地掌握。同時(shí),教材結(jié)合計(jì)算教學(xué),安排了應(yīng)用所學(xué)計(jì)算知識(shí)解決問(wèn)題的內(nèi)容,讓學(xué)生了解所學(xué)知識(shí)的實(shí)際應(yīng)用,學(xué)習(xí)解決現(xiàn)實(shí)生活中相關(guān)的計(jì)算問(wèn)題,培養(yǎng)學(xué)生用數(shù)學(xué)解決問(wèn)題的能力。
教學(xué)難點(diǎn):100以內(nèi)的加減法口算,購(gòu)物,以及數(shù)學(xué)思維的訓(xùn)練。
四、本學(xué)期提高教學(xué)質(zhì)量的具體措施
1、從學(xué)生的年齡特點(diǎn)出發(fā),多采取游戲式的教學(xué),引導(dǎo)學(xué)生樂(lè)于參與數(shù)學(xué)學(xué)習(xí)活動(dòng)。
2、在課堂教學(xué)中,注意提問(wèn)時(shí)適當(dāng)降低難度。應(yīng)該考慮學(xué)生實(shí)際的思維水平,多照顧中等生以及思維偏慢的學(xué)生。
3、布置一些比較有趣的作業(yè),比如動(dòng)手的作業(yè),少一些呆板的練習(xí)。
4、及時(shí)進(jìn)行學(xué)習(xí)水平反饋,及時(shí)查漏補(bǔ)缺。
5、加強(qiáng)家庭教育與學(xué)校教育的聯(lián)系,適當(dāng)教給家長(zhǎng)一些正確的指導(dǎo)孩子學(xué)習(xí)的方法。
6、一定要注意保護(hù)學(xué)生的自尊心和學(xué)習(xí)的興趣。培養(yǎng)學(xué)生學(xué)習(xí)的良好習(xí)慣
7、課堂主要是提高學(xué)生能力
8、讓學(xué)生在生動(dòng)具體的情境中學(xué)習(xí)數(shù)學(xué)。
9、引導(dǎo)學(xué)生思考,并與同伴進(jìn)行合作交流。
10、培養(yǎng)學(xué)生初步的提出問(wèn)題和解決問(wèn)題的能力。
第五篇:新北師大版小學(xué)一年級(jí)下數(shù)學(xué)圖書(shū)館教案
一年級(jí)下數(shù)學(xué)《圖書(shū)館》教案設(shè)計(jì)
【教學(xué)目標(biāo)】
1.在問(wèn)題情境中探索并掌握兩位數(shù)加一位數(shù)進(jìn)位加法的計(jì)算方法,在交流與比較中優(yōu)化出適合自己的算法。
2.體會(huì)解決問(wèn)題策略的多樣性,培養(yǎng)學(xué)生獨(dú)立思考的能力和思維的靈活性。
3.在學(xué)習(xí)活動(dòng)中養(yǎng)成動(dòng)手操作、明確表達(dá)、認(rèn)真傾聽(tīng)和獨(dú)立思考的良好習(xí)慣。
4.提高學(xué)生探索問(wèn)題的能力,鼓勵(lì)學(xué)生與他人積極合作學(xué)習(xí)。【教學(xué)重點(diǎn)】
探索并掌握兩位數(shù)加一位數(shù)的進(jìn)位加法的計(jì)算方法,初步體會(huì)計(jì)算方法的多樣性。
【教學(xué)難點(diǎn)】理解不同算法的算理,尤其是滿十進(jìn)一的運(yùn)算規(guī)則 【教學(xué)過(guò)程】
(一)課前活動(dòng)
1、搶答,口算。29+1
40+3
30+13 8+4 8+9
20+16
2、填空
(1.)
十個(gè)一是()個(gè)十。
(2.)
一個(gè)十是()個(gè)一。
(3.)
28里面有()個(gè)十和()個(gè)一。
(二)情境導(dǎo)入
1.同學(xué)們喜歡看課外書(shū)嗎?今天老師想帶大家去我們學(xué)校的圖書(shū)館看看(板書(shū)課題:圖書(shū)館),2.圖書(shū)館是一個(gè)知識(shí)的海洋,在圖書(shū)館的一角,老師發(fā)現(xiàn)了一些適合同學(xué)們看的書(shū),請(qǐng)同學(xué)們看看,從這一幅圖中,你得到哪些數(shù)學(xué)信息?
《童話世界》有28本、《海底世界》有9本 生2: 《叢林世界》有4本、《咪咪學(xué)院》有8本: 師:根據(jù)我們得到的數(shù)學(xué)信息你能提出哪些能用加法計(jì)算的數(shù)學(xué)問(wèn)題呢?
生1:《童話世界》和《海底世界》一共有幾本?
生2:《童話世界》和《叢林世界》一共有幾本? 生3:《童話世界》和《咪咪學(xué)院》一共有幾本?
3.我們班的小朋友真能干,一下子就提出了這么多的數(shù)學(xué)問(wèn)題,下面我們先來(lái)解決這個(gè)問(wèn)題:《童話世界》和《叢林世界》一共有多少本?4.你能列出算式嗎? 生:
28+4= 5.探究算法
(1)同學(xué)們可以借助小棒擺一擺,思考28+4的計(jì)算過(guò)程(2)誰(shuí)愿意把你的方法介紹一下。
算法一:學(xué)生上臺(tái)演示數(shù)小棒,先擺28根,再擺4根,把4根里的2根和28根湊成30根,再加上2根,一共是32根。板書(shū):28+2=30 30+2=32
算法二:先算8+4=12,再算20+12=32。(板書(shū):8+4=12 20+12=32)
算法三:計(jì)數(shù)器。同時(shí)課件演示。(先在計(jì)數(shù)器上撥出28,然后再一個(gè)一個(gè)在個(gè)位上加珠子,個(gè)位滿十個(gè)珠子怎么辦?個(gè)位上十個(gè)珠子是十位上一個(gè)珠子,我們就可以在十位上加一個(gè)珠子,個(gè)位上就沒(méi)有了。我們把個(gè)位上的十個(gè)珠子加到十位上,我們把它叫做滿十進(jìn)一。即從個(gè)位算起,滿十進(jìn)一。然后接著在個(gè)位上撥兩個(gè)珠子,最后結(jié)果就是32.(板書(shū):計(jì)數(shù)器)算法四:列豎式。用豎式計(jì)算,寫(xiě)得時(shí)候要注意什么呢?
數(shù)位對(duì)齊,個(gè)位對(duì)個(gè)位,十位對(duì)十位。
師:8+4=12滿十怎么辦?滿十進(jìn)一
怎樣記不會(huì)忘了進(jìn)一?進(jìn)位寫(xiě)在十位和個(gè)位的中間,個(gè)位2寫(xiě)下,再算十位和進(jìn)一相加。
(3)小結(jié)。小朋友真棒,能想出多種方法來(lái)計(jì)算28+4=32。師:其他兩個(gè)問(wèn)題:
《童話世界》和《海底世界》一共多少本?、《童話世界》和《咪咪學(xué)院》一共多少本?
選擇其中的一個(gè),先列出算式,再用你喜歡的方法,動(dòng)手算一算。
師:坐完后,同桌小聲交流你是怎么算出來(lái)的。
三、練一練 1.書(shū)本第69頁(yè)第一題,圈一圈,算一算
2.書(shū)本第69頁(yè)第二題,用豎式計(jì)算:
58+7= 5+32= 38+6= 8+27=
四、成功體驗(yàn),回味進(jìn)位加法。
1.這節(jié)課你們學(xué)得開(kāi)心嗎?誰(shuí)來(lái)說(shuō)說(shuō)你學(xué)會(huì)了什么新本領(lǐng)? 2.你想提醒大家在計(jì)算中要注意什么? 板書(shū):
圖書(shū)館
《童話世界》和《叢林世界》一共有多少本?
28+4=32(本)
(1)28+2=30
30+2=32(2)8+4=12 20+12=32
(3)
十
個(gè)
先算個(gè)位
+
個(gè)位滿十向十位進(jìn)一
——————
答:《童話世界》和《叢林世界》一共有32本