This activity of "learning the addition of 7" is carried out on the basis that children learn the addition and subtraction of numbers within 6 and the composition of 7. Children in large classes have preliminary calculation ability. In order to further improve their ability and prepare for entering primary school, when I design "Learning 7 Addition", I pay attention to starting from perception, from concrete to abstract, from easy to difficult, and stimulate children's interest in learning through colorful math problems to achieve the purpose of cultivating children's logical thinking ability.

Key points:

Look at the picture and list the addition formula of 7.

Difficulties:

Understand the commutative law of addition and list different addition formulas of 7.

Goal:

1. Make up application questions according to pictures, list formulas for calculation, and consolidate the understanding of addition formulas and their meanings.

2. Explore the position changes of two digits before and after the "+"sign, and get the law of the same number.

3. Actively explore mathematical activities,

Prepare:

1, children's math book

2, "+"and "=", the number 1~7, magnetic teaching AIDS such as fruits and animals.

Process:

First, review the composition of 7 with the game of "touching the ball"

Example: The teacher said the number 1, "Hey, how many balls did my 1 ball touch you?" Baby, "Hey, hey, your 1 ball touched me 6 times."

Second, the study of composition 7

1, see diagram formula.

(1) The teacher first took out 1 the magnetic teaching aid "trees" and asked the children to show it with a corresponding number of magnetic teaching AIDS. Then take out six magnetic teaching AIDS "trees" and let a child represent them with a digital teaching aid. Question: How many trees are there now? Can you make up an application problem? Can it be expressed by a formula problem? Ask a child to come up and take out the addition formula of 1+6=7 and say the meaning of each number.

(2) Arouse children's thinking: Can you come up with a different addition formula?

2. Explore the commutative law of addition.

(1) The teacher shows the magnetic teaching AIDS with the numbers 1~7 and "+"= "and asks the children: What other formulas can be written according to the composition of 7?

(2) Encourage children to explore boldly, discharge different formulas and understand the exchange law of addition. The position change of the two digits before and after the "+"sign does not affect the answer after the "=" sign.

Third, scramble to answer the game and consolidate the addition within 7.

The children are divided into two teams, men and women. Look at the picture, answer the application questions and say the formula to calculate, so as to consolidate the addition within 7.

Four. Promotional activities

Use the "Learn Addition within 7" on page 5 of the children's math book, and contact the children as required to further consolidate the addition operation within 7.