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Math activity in middle class: Go for an outing together.
Activity objectives:

1. Try to count correctly in all cases.

2. Make use of clues and known conditions to count people and improve the ability of analysis and reasoning.

Activity preparation:

Teaching aid: PPT courseware

Children's learning tools: children's homework materials, watercolor pens.

Important: Try to count correctly in all situations.

Difficulties: Use clues and known conditions for analysis and reasoning.

Activity flow:

First, calculate the points in the game scene.

(1) The teacher brought a child named Xiaolan to see what Xiaolan was doing. (According to the cloth covering Xiaolan's eyes, everyone is playing hide-and-seek) Demonstrate PPT 1.

1. See where Xiaolan's friends are hiding. (Behind the big tree 1, in the house 3, in the grass 2)

2. Demonstrate PPT2:

(1), guide children to determine the number according to the exposed part.

(2) Children find one and draw a circle in the place where this person is hiding-as a mark.

(3) Guide children to array first and then count. )

Summary: count the children behind the trees and in the grass first, and then count the children in the house to avoid omission.

(2) How many children can a * * * find? (6)

Summary: When there are many people (things) or when you can't see clearly, you can make a mark while counting, so that there will be no majority and no omission. You can also count some parts first and then count them, so you can't go wrong.

Focus on observation: children's ability and form of counting (visual inspection, counting and counting again), and know the role of marker pen.

Second, use clues to count people.

Xiaolan went for an outing with her good friend today. They first came to the playground to see what they were playing.

1, demonstrate PPT3 (showing a bunch of shoes in disorder) Is it necessary to take off your shoes to play this game? Do you know what game this is?

Only these shoes, can you count how many children are playing in them? What should I do if I can't count it? Put the same shoes in order)

Align these shoes to see if they fit. How many pairs of shoes are there altogether? Guess how many people?

4. Why do two shoes only count as "1"?

Summary: A person has two feet and needs to wear a pair of shoes, so he needs a pair. Remember to take off your shoes in the future.

(2) Look, what are Xiaolan and her good friends playing? Is it six people? You guys are amazing. You can tell how many people there are just by looking at the shoes. Demo PPT4 (Ocean Ball Scene)

Points for observation: Know that a pair of shoes corresponds to one person, and try a pair of even shoes.

Third, the number of people confirmed through analysis and reasoning.

This outing is really interesting. Xiaolan took many photos. See where they took pictures? (Panda Pavilion PPT5)

1, observation and analysis, how many photos did the Panda Pavilion take? (Click on the photo in front of the Panda Pavilion, * * * two photos. )

3. Some people say three people, others say four people. How many people went to the Panda Pavilion? Let's count together. (Demonstration PPT marks Xiaolan and her companions with numbers respectively. )

Summary: Xiaolan took photos with two companions respectively. Xiaolan took two photos, only one person. Marking with numbers can help us count more clearly.

(2) Children's operation:

1. After watching the giant panda, Xiaolan and her good friend came to the river again. This time they took three photos. Can you count how many people there are? Think about it. How many times do people have to appear again? Please write down the numbers in the box, or indicate them with dots.

2. Give each person an operation exercise material, and try to analyze and record a * * *, and how many people there are.

3. Sharing and communication: Is it 4, 5 or 6 people? Tell me your reasons. (Click on the photo by the lake, one * * * three, arrange these characters in a row and make sure there are four people. )

Summary: When counting photos, you should see clearly, and it is enough to count the people who appear repeatedly once.

Observation point: analytical reasoning ability, which symbols are used for marking? Can you record with numbers or dots?

(3) Summary: Today, we are really happy to go for an outing with Xiaolan. When we know how to count, we should be careful not to have too much or too little. We have learned to count the number of people from the shoes we put on, and we can also observe and analyze the number of children from the photos. Our children's counting skills are getting bigger and bigger.