Children learn addition and subtraction within 10, and try to represent numbers with passwords.

Activity preparation:

One book for children, the second book for large class mathematics, and one projector.

Activity flow:

Teacher: Each of us has a telephone number at home. Now please help "Dada" find out his home phone number. What's the phone number?

Second, look at the projector.

1, solve the arithmetic problem, and you can know the telephone number of "Dada";

2. Look at the numbers and the corresponding passwords, and write the telephone number of Grandma Dada's house;

3. Turn your own home phone number into a password.

Third, children's operation and teachers' itinerant guidance.

The teacher helps each child match the numbers with the passwords.

Fourth, check each other's homework and guide children to think about other ways to contact friends besides calling.