1, learning 1-20 counts by group, two numbers;

2. Establish the concept of number groups.

Activities to be prepared

A set of teacher demonstration boards and a set of children's learning tools.

Activity process

First, the activity import:

Teachers and children play odd-even games, from 1 to 10, and then to 20.

Second, the activity organization:

1. Please insert two red pieces, two yellow pieces, two blue pieces, two green pieces, two black pieces and a *** 10 piece in the first row of the chessboard.

2, the teacher asked:

A * * * inserted several colors of chess pieces? How many pieces are there in each color? How many pieces are there in a * * *?

Let the children count first, then the color-2, 4, 6, 8, 10.

3. Please insert the same chess pieces as the first row, and say 12, 14, 16, 18 and 20 at the same time.

Please tell the children how to count quickly. Why?

Teachers and children practice two numbers together, so that children can further perceive the law of even series with the help of color differences.

5. The game "Listen and take the pieces."

The teacher clapped his hands and asked the children to take off two pieces. At the same time, they asked the children to practice counting two pieces until all the pieces were taken off.

End of activity

Retract the insert plate.

Activity expansion, counting game of outdoor sports activities, counting game of digital table,