"Speaking lessons" is conducive to improving teachers' theoretical literacy and ability to control teaching materials. The following are my collected lectures on "Big and Small" in kindergarten small class mathematics, hoping to help you! If you think it's good, welcome to share!

Tell the design intention

"Big" and "small" are a set of relative concepts obtained by comparison. Children should not only acquire these relative concepts in their studies, but also apply the concepts of "big" and "small" to their daily lives. This design uses a series of games to let children gain rich perceptual knowledge in the "big" and "small" surprise exploration, and initially learn the methods of observation and thinking from different angles.

Say the goal of the activity

1. Learn to visually observe objects with obvious size differences and understand that the size of objects is identified by comparison.

2. Through games, children can initially realize the transition from big to small and from small to big, and initially develop children's multi-directional thinking.

3. Stimulate children's initiative and enthusiasm for exploration, and cultivate children's interest in exploration.

Say activity preparation

1.20 cardboard fish (different sizes), several fishing rods, and a "pond" surrounded by big building blocks.

2. Bubble blowing equipment: a plastic bottle filled with soapy water, more straws than children (single hole, porous, different thickness), and several balloons.

3. There are several kinds of foods that can become bigger or smaller, such as biscuits, fruits, vegetables and dried fungus.

4. Camera, big white paper, brush. Children should bring their own photos and recent photos of their childhood.

Say activity process

Game 1: Fishing

1. Invite one child to go fishing at a time, and ask to catch the biggest and smallest fish in the "pond". After the fish are caught, they are put in the big fish basket and the small fish basket respectively.

2. Try: Let children fish freely and still want the biggest and smallest fish.

Game 2: Super Comparison.

1. Please put your hand in front of your eyes as a telescope. Let's look for "big" and "small" in the classroom.

2. Divide the children into two groups and play a super comparison game: Who has the biggest shoes? Whose head is the biggest? Who has the biggest mouth? Who has the biggest hand? Who wears the biggest clothes? ……

Game 3: Blow balloons

1. Guide children to think: What objects can become bigger and smaller?

Swimming ring, balloon, trampoline, folding bed, fan, quilt and umbrella. )

The children tried to make the balloon bigger.

(1) Let some children blow balloons with their mouths.

(2) It is too difficult to blow with your mouth. You can use a pump to inflate it.

3. Think about how to make the balloon smaller.

(1) Use your own body parts (poke with your hand, step with your foot, step with your ass).

(2) With the help of external force (puncture with a needle, puncture with a hammer or brick, puncture with a nail)

(3) Untie the rope that binds the balloon and deflate it directly.

Children can play with balloons freely outdoors.

Game 4: Food changes.

1. Everyone sat around the table and observed biscuits, fruits, vegetables, ham, dried fungus, flour and other foods.

2. Question: How to make food bigger and smaller? ：

Eat, fry, cut everything, chop, cut, vacuum package, dry in the sun, and soak and fry. )

3. Share food, make delicious food smaller and disappear.

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