Unit 3 Addition and subtraction (1)

How many class hours are there in * * * 13?

Teaching content: the first volume of the first grade primary school mathematics textbook published by Beijing Normal University, with 24~26 pages, "How many are there in one * * *".

Teaching objectives:

1. Combine the familiar life background and existing life experience to understand the meaning of addition.

2. In the activities of observation and operation, explore the addition of numbers within 5.

3. Under the guidance of the teacher, learn to ask and answer addition questions from specific situations.

Teaching emphasis: understand the meaning of addition and the connection between calculation and life.

Teaching difficulty: understanding the meaning of addition.

Teaching process:

First, the situation introduction (pencil situation).

Teacher: Today, the teacher invited a good friend from our math kingdom to have a math class with us. Do you want to know who she is?

Health: Yes!

Teacher: OK! Please look at the big screen. (first put the picture 1. ) Look, class. Do you remember her?

Health: Yes, it's a smile!

Teacher: Yes! Students are great! Then let's have a look. Smile, what's in your hand?

Health: Pencil.

Teacher: Good! Please take a closer look at how Xiaoxiao holds a pencil.

Health 1: There are three pencils in one hand and two pencils in the other.

Teacher: That's good! Students, look again. What do you know from this picture?

Health 2: Xiaoxiao put the pencils on both hands together.

Teacher: Great! Next, please count "How many pencils does Xiao Shao have in her hand when she puts them together".

Health: A * * * has five pencils.

Teacher: OK! Students are great! Next, please use your own sticks instead of pencils and follow the teacher to make a smile!

Student: (The teacher and the students imitate the laughing scene together and say as they do: three in one hand and two in the other. Put the sticks with both hands together, and one * * * has five sticks. )

Teacher: Yes! The students just performed very well! Everyone is full of energy! I hope the students can perform better next!

Teacher: Speaking of which, some students may have guessed that the topic of our math class today is more or less a * * and more or less a * *.

Teacher: Next, please follow the teacher to the park and see what the little panda is doing there.

Second, teach new lessons.

1. Observe the situation diagram and describe its meaning (panda situation)

Teacher: Look, class, what is the panda doing?

Health 3: There are three pandas eating bamboo and two pandas playing with balls.