Review the decomposition and composition of numbers within 5, and initially understand that all numbers except one can be divided into two numbers, and the sum of the two numbers is the original number.

Activity preparation:

Some digital cards, chest ornaments, children's operating materials, and digital cards in children's pockets.

Activity flow:

First, the beginning part: "Review the decomposition of 5"

Import, "Let's see what this number is?" (5) How many ways can we divide the number 5? There are four kinds: (1 and 4,2 and 3,3 and 2,4 and 1). How clever these children are! Play a game with the decomposition of 5. I say a number, please say a number, and your numbers add up to "5". For example, "I said 2" and the child replied "I said 3". You can clap your hands several times according to the music rhythm.

Second, the basic part: "game"

1, "I really enjoyed this game. We are going to play in the forest again. The forest is far away. Let's go by train in groups of five! "

""Well, we are in the forest. The king of the forest has prepared a game for us. When the music stops, please look at the digital card and stand on both sides of the line quickly. (Let a group of children demonstrate, for example) Start the game. "

There is a more interesting place in the forest. What is this? (magic hole), this magic hole only allows the number 5 to pass, but what should our children do if they want to pass? (Be a digital baby first), please take out your digital baby first. You see, if you change this way, you will become a digital baby. Change it quickly! How many children see themselves as digital babies? Is your number 5? How can we make our number five? (combination of 2 and 3) That's clever. You see, she and I add up to five. Let's go hand in hand first. You should also find a friend who adds up to 5 and queue up to cross the magic hole together!

Third, the end part: children's operation card practice

Did you have fun playing video games today? Can we record the game just now? The children take notes under the guidance of the teacher.

Activity expansion:

Guide children to practice operating cards in the activity area. Let the children consolidate and review today's activities.

Composition of learning 5

Activity objectives:

1, learn the composition of 5, and know that there are two ways to divide 5 into two parts.

2, can record the number of objects according to the characteristics of the picture.

3. Be able to tell the activity flow while operating as required.

Activity preparation:

1, teaching aid: model painting on the blackboard, digital card 1-5.

2. School tools: Every child has a number on his chest, and everyone has an apple doll.

Activity flow:

1, use the game of finding friends to review the composition of 4.

Today, the teacher invited children to play the game of finding friends, but there was a requirement. As soon as the music was over, we should quickly find friends whose numbers add up to 4.

Why do you want to make friends with him?

2, children's operation, explore the four methods of 5.

(1) briefly introduce the game information and operation requirements.

Last time we studied the composition of 4, we know that there are three ways to divide 4 into two parts. Do you want to know how many ways to divide 5 into two parts? Then please share a point, have fun and record your sharing method.

(2) children carry out operation activities, teachers tour guidance, observe and understand children's operations, give individual guidance, and encourage children to introduce each other's operations.

(3) Children introduce their own operation process.

Summary: There are four ways to divide 5 into two parts.