Questions 7- 10 and 6 1 on pages 56 and 57.

Teaching purpose:

1. Let students learn to calculate the sum of 8(9) and the subtraction of 8(9).

2. I personally experienced the exploration process of writing four formulas according to a picture, which made students feel the connection between "one picture and four styles" and real life.

3. Cultivate students' interest in learning mathematics.

Prepare teaching AIDS and learning tools:

1, the courseware of scene diagram on page 56 of the textbook. 2, a box of learning tools.

Teaching process:

First, review the preparation.

1, oral calculation.

2+2= 1+2= 6-5= 7-3= 2+3= 3+4=

5-5= 5+0= 0-0= 7- 1= 7-6= 0+4=

2. Composition of the number of trainees.

Second, the introduction of new courses.

1, the teacher talks.

We have learned the addition and subtraction within 7, and today we will continue to learn the addition and subtraction of 8 and 9.

2. blackboard writing topic.

Third, learn new knowledge.

1, the learning of "one picture and four styles".

(1) Show the illustrations in the textbook. Teacher: How many formulas can you list according to this picture? what do you think?

Teacher: Four people cooperate, express their opinions and complement each other.

(2) Students report and exchange their own addition formulas, and teachers cooperate with students to speak on the blackboard: 6+2= 2+6= 8-2= 8-6=

Teacher: How did these four formulas come from? Who would say?

(3) Let students calculate the number of 6+2= 2+6= first, and then talk about their own calculation methods.

(4) Guide students to compare 8-2=6 8-6=2.

Teacher: Please observe carefully. What are the similarities and differences between these two formulas?

2. Learn "Swing" on page 57.

(1) Show the scene of "swinging" on the screen to guide students to observe.

Teacher: What is the picture? What does this mean?

(2) Start "posing" and communicate the results of your posing. The key point is how you got the number of four questions.

(3) "Think about it"

3. Give an example as usual. Say the formula while putting the learning tool.

Fourth, consolidate practice.

1, questions 7, 8 and 9 on page 6 1

2. Card games. Question 10

Verb (abbreviation for verb) class summary.