This semester, the children in the big class have begun to learn the division and addition and subtraction of numbers within 10. In view of the situation that children's thinking in images is dominant and logical thinking is almost absent, I have integrated mathematics learning into stories, PPT animations, games and other activities, and achieved good results. Children learn easily in this learning atmosphere, and their teaching goals are achieved unconsciously. My design idea is as follows, and I hope to get criticism and correction from my peers.

moving target

1. Learn the subtraction of 5, understand the quantitative relationship between the graphs, and understand the meaning of "going" and "staying".

2. Learn to express the meaning of subtraction formula in concise language.

3. Experience the fun of math activities.

Activities to be prepared

1.PPT, every child has a set of digital operation cards.

2. There is a mailbox with the number 1 ~ 4, which contains several "letters" with an addition formula within 5.

Everyone should have a drawing card and a pen to demonstrate.

Activity process

Play the game of "touch the ball" first and review the composition of 5.

Teacher: Children, today the teacher will play a game of "touching the ball" with you.

Explain the rules of the game: the number of balls the child said and the number of balls the teacher said add up to five. For example, the teacher said, "How many balls does my ball touch?" The child replied, "Your 1 ball touched 4 balls". Children can answer in groups or practice alone.

Second, introduce the topic and learn the subtraction of 5.

1. Show PPT①.

Teacher: I played the game of "touching the ball". I want to take you to the park. Let's go!

(1) How many buses are there at the station? What is the number of babies? How many cars did you drive? What is the number of babies? How many cars are left?

(2) Teacher (showing "-"): What does this symbol mean? (Guide children to discover the meaning of "minus sign". )

(3) The teacher answers the blackboard according to the children: 5- 1 = 4 (Read this formula together. )

(4) Teacher: What does this formula mean? (Can guide children to understand the meaning of the formula. )

(5) Teacher: Please tell the meaning of the formula with the teacher's picture and put a pendulum formula.

2. Show PPT②: How many butterflies are there in the garden? What is the number of babies? How many butterflies flew away? (2) What is the number of babies? How many butterflies are left?

3. Show PPT③: There are 5 fish in the pond, 3 fish have swam away, how many are left? Please use the formula.

4. Show PPT④: Is there any bread in the grocery store? How many pieces did you buy? How many pieces are left? Please use the formula.

Third, the game: sending letters (see the calculation)

(1) Show the game materials 1-4 e-mail box and many letters for children to observe, think and discuss the rules of the game.

(2) Let the children open four mailboxes in groups and check whether the "letter" is delivered correctly according to the rules of the game.

Fourth, look at the graphic calculation and further master the subtraction within 5.

Teacher: Children, today the teacher took you around the park, saw beautiful scenery, tasted delicious food, learned subtraction calculation, and played the game of sending letters. Now I want to test you. Look at these pictures, work out the formula, work out the answer and see who is the best.

-Children's operation, teachers' tour guidance.

-teacher: how to arrange it? What does this formula mean? (According to the children's answers on the blackboard, verify collectively. )

Five, the application of contact life

1. Teacher: Have you ever thought about what can be calculated by subtraction in life?

2. When you get home, will you ask your parents some math questions with the skills we learned today?