Activity objectives:

1. Let children compare the number of objects in the two groups by overlapping correspondence, parallel correspondence and straight line correspondence.

2. Cultivate children's practical ability and comparative ability.

Activity preparation:

Fruits, bowls and plates, colored buttons, operation boards, colored pens and pictures.

Activity flow:

1. The children drove into the classroom. Teacher: Every child has a chair. Are there any chairs left? By comparison, who has more children and chairs? Who is less?

2. The teacher introduces the new lesson in the form of stories. Teacher: The teacher brought a picture today. Do the children look beautiful? Who's in the picture? Shall we listen to the story in the picture? (Shi Qing tells this story again)

Teacher: Let's guess, children. Are there more carrots or white carrots? How can we know who is more and who is less? (Ask children to demonstrate and compare)

Summary: Comparing the number of two groups of objects, we can use overlapping correspondence and one-to-one parallel correspondence.

Teacher: Who has more red flowers and yellow flowers in the garden? What method is used to compare? (The teacher mainly introduces the comparison with connection.)

4. Grouping operation: First, assemble the fruits and compare who has more fruits and plates. The second group compares buttons of different colors. Who has more buttons and who has fewer buttons? The third group compares two kinds of animals by connecting lines. Who is more and who is less?

5. Summary: The number of two groups of objects can be compared by overlapping correspondence, one-to-one parallel correspondence and straight line correspondence. Is there any other quick and good way? For example, the teacher here has a bag of red flowers and a bag of green flowers. Who can tell who is more and who is less in the fastest and best way?

Reflection after class:

First, the effect analysis.

1, more, less, as much, is the content of small class mathematics activity perception set and is often used in daily life. How to better let children master and learn to compare more, less and as many objects as possible in various ways is our concern. One of the important links in this activity is operational activities. How to optimize the operation materials in mathematics activities, show the boring and abstract mathematics knowledge with different forms of operation materials, and let children feel mathematics randomly, enter mathematics, and have a strong interest in mathematics? When I provided the materials, I fully considered the age characteristics of the children. In this activity, I use the methods of overlapping correspondence, parallel correspondence and connecting correspondence to let children learn to compare in operation. First, assemble the fruit. Who has more fruit and plates? The second group compares buttons of different colors. Who has more buttons and who has fewer buttons? The third group compares two kinds of animals by connecting lines. Who is more and who is less? The difficulty of these three groups of materials is different. I let the children rotate in groups and let them try to practice to meet the needs of children at different levels. Moreover, these educational materials can attract children's attention, stimulate their curiosity and enable them to practice again and again with interest. Fully mobilized the enthusiasm of children to participate, everyone can participate, which not only consolidated children's knowledge, but also gained a successful experience.

The focus of this activity is outstanding. Teachers attach importance to the summary and expression of each link, and the mathematical concepts are clear and clear.

3. The classroom atmosphere is active, and children can acquire knowledge easily and happily.

Second, improve the strategy.

1, the wall chart is more traditional and the courseware is more vivid.

2. In the teaching process, when the child's answer is biased, the teacher should first respect the child's thinking, and then introduce it according to the child's thinking, and the effect will be better.