1. Perceive numbers within 3 by counting, recognizing, watching, playing, speaking, posting and posing, and develop children's thinking ability.

2, let the children know that 2 plus 1 is 3, learn the correct number of hands, 3 objects and say the total.

3. Create game situations to stimulate children's interest in math activities.

,, activity preparation:

Preparation of teaching AIDS and learning tools: draw three pictures of eggplant and three pictures of apple. Students prepare three pencils and three round chalks. The teaching method is:

First, review.

1) Count from 1 to 2.

2) Composition of1.2.

Second, the new lesson 1. Count three objects. 、

(1 Show three drawings of eggplant courseware, and guide students to observe the drawings carefully.

Q: "What is the purpose of this picture"? Puppy.

Count, how many are there in a * * *? Let the children say the numbers.

Add one, and let's make a * * *? 、

After the students answered, the teacher said: 2 only added 1, only 3. 2 plus 1 is 3, which is the number of eggplant 3. Lead children to read.

It can be represented by the number "3". Today, we will learn "3". 、

Write "3" on the blackboard. Read the number 3

Description: The word "3" is like a listening ear. There are two strokes, the first is a semicircle, and the second is a semicircle.

(2) Take out three apple demonstration numbers.

The teacher asked, "Show me some apples."? Count them one by one, and then ask how much?

(3) Show the eggplant and let the children count three eggplants on the stage.

(4) Show the children and let them count three children on the stage.

(5) Tell me which objects in my life have the number 3?

(Inspire children to say: three oranges, three pencil boxes and three erasers) Third, teaching composition 3.

(1) Students take out three apples and put them in two piles. Teachers patrol.

(2) Let the students say it in different ways.

(3) Guide students to summarize and explain that 2 and 1 constitute 3, and 1 and 2 also constitute 3. Actually, it's just two piles of sticks.

So when you see that 2 and 1 make up 3, you can think that 1 and 2 make up 3.

Teacher-student activities: Ask three children to practice on the stage (3) Exercise 3.

First, the composition of Strange Theory 3. (2 and 1 constitute 3, 1 and 2 constitute 3. )

B, the teacher asked: "2 and 1 make up 3, what else can you think of?"

Writing on the blackboard: division of 3.

Fourth, interactive games between teachers and students:

1. Please reach out and count your stool legs.

2. What is the slogan "Study hard" on the classroom wall?

3. Pat the table three times with your hand.

4. Find a friend and put the school tools under the posted number plate. (showing courseware),

5. Summary: A lamb has four legs and a kitten has four legs, both of which can be represented by 4.

Fifth, guide writing.

1, the method of speaking and writing 3

2. Do you have any good ways to remember 3. Summarize after communication.

3. communication.

4. Children practice writing.

Six, activities to expand practice, compile games to consolidate understanding 3.