1. Cultivate children's interest in math activities through the creation of games and situations.

2. Let children perceive and compare the sizes of two similar objects.

3. Let children experience the joy of communication and success.

Material preparation:

1, two dolls of different sizes, birthday cake box.

2, warm home, big bed, small bed, big TV, small TV, etc.

3, toys, gifts, biscuits, candy and other items of different sizes. One set of daub, one set of daub board, one set of large board and one set of small board.

Guide element:

Focus on guiding children to distinguish gifts of different sizes and reminding them to use polite expressions when giving gifts.

Activity flow:

1, the initial perception of size in the game.

Today, big and small celebrate their birthdays. Shall we go to the store to buy presents? Let's drive! Are you ready? Let's go! (Playing music)

Here comes the shop. Stop the car. Teacher: When buying gifts, children should pay attention to buying two similar ones, one big and one small. The teacher can demonstrate.

Gifts are all bought, let's go to big and small homes!

Hey! Large and small homes are here. Knock on the door first! Knock on the door and ask, "Is anyone home?" Mothers of all ages come straight to the point and greet each other.

1) Know something about big and small and them. Guide children to know that things that are used more are big and things that are used less are small. Which is bigger than guiding children to compare their gifts? Which is smaller?

2) Teacher: "Let's give gifts to people of all ages! Remember: I like big gifts very much, and small gifts like small gifts. " Guide the children to say a complete sentence, such as: "I give the big apple to the big one."

3) The teacher checks whether the child is placed correctly.

2. Create a situation to stimulate the desire for hands-on operation and let children further perceive the size.