Math teaching plan for large classes: design ideas of as much as water 1;
The education of quantity conservation should be carried out on the basis of understanding the corresponding quantity. In the action guide of "Guidelines for Kindergarten Education (Trial)", one of the teaching objectives of large class mathematics is "to have a preliminary concept of length conservation and capacity conservation", and its content requires that "all kinds of variant materials with length and capacity should be provided for children to observe, judge and verify whether their length or capacity are equal; In outdoor activities, guide them to judge and verify equal distances, and consciously provide various containers to let children think about the conservation of capacity when playing with sand and water. " In the conservation teaching of large classes, the conservation of quantity is the first conservation problem that children come into contact with. According to this requirement, I designed the activity of "there is as much water as there is".
Activity objectives:
1. Try to do experiments with water to verify and experience the conservation of volume.
2. Perceive the phenomenon of conservation of capacity, and initially understand that the same amount of liquid is packed in containers of different sizes, and its amount remains unchanged.
Important and difficult activities: perceive the phenomenon of capacity conservation, and initially understand that the same amount of liquid is packed in containers of different sizes, and its amount remains unchanged.
Activity preparation:
1, preparation of teaching AIDS, 3 groups of transparent cups (3 cups in each group: one group has the same height and thickness; A group of different heights and the same thickness; A group of the same height, different thickness). Some pigment water. Disposable cups several.
2. Multiple containers of different sizes, rice.
3, children's operation book.
Activity flow: lead-in activities-children's experiments-teacher-student summary-children's games-activity extension.
Activity flow:
1, game: carry water.
2. Show teaching AIDS: Show three sets of cups. The teacher divided them into apple group, watermelon group and pineapple group. Let the children distinguish the difference (height, thickness) of each group of cups.
3. Teachers do experiments in groups.
The first group: pour in different amounts of water and let the children observe and compare the water level in each cup. Which glass of water is the most and which glass of water is the least? The children answered and summarized at the teacher's prompt.
The second group: pour the same amount of water into each cup and let the children observe and compare the water level in each cup. Talk as much as three glasses of water? Why? The children answered and summarized at the teacher's prompt.
The third group: pour the same amount of water into each cup and let the children observe and compare the water level in each cup. Talk as much as three glasses of water? Why?
The children answered and summarized at the teacher's prompt.
4. The game "Little mouse buys rice"
Children play mice and teachers play rice sellers. Sell the same amount of rice and put it in containers of different sizes. Is it the same amount of rice? Why?
The children answered and summarized at the teacher's prompt.
5. Guide children to complete the Children's Operation Book.
Math teaching plan for large class: there are as many activities as water;
1. Try this experiment to gain experience about capacity conservation.
I am willing to explore the change of water and understand its main characteristics.
Activity preparation:
1, fun exercise: ability comparison
2. bottles marked with scales, water, recording paper and pens.
Activity flow:
First, observe and ask questions.
Teacher: Let's have a look. Are these six bottles of water the same? how do you know
Conclusion: Now let's try to do an experiment and compare the water quantity.
Second, the experimental operation
1. Teacher: How to verify it? How to operate?
Requirements: The two bottles of water used in the experiment should not be mixed together, and the action should be slow during the experiment, so as not to spill the water and affect the experimental results.
2. Record the experimental results
(1) The method of two bottles with different heights is to compare the water levels, and we can see that the water in the bottles is the same.
It turns out that the height of the bottle does not affect the amount of water.
(2) Choose two identical empty bottles from two bottles with different thicknesses, and pour the drinks from the bottles with different sizes into them, and there will be as many drinks as there are.
Methods: Choose a bottle, pour a bottle of beverage, mark it with strokes or sticky paper, pour a bottle of beverage into the bottle after pouring the beverage, and see if the position of the beverage is consistent with the original mark. Comparing the thickness of the original bottle does not affect the water quantity.
(3) The contents of the bottle containing the contents are stones. The method is to take the stones out of the bottle and compare the water level.
The contents are sponge nodules: the method is to squeeze the water in the sponge back into the bottle and compare the water levels.
It turns out that whether there is an object in the bottle does not affect the amount of water.
3. Summary: The height, thickness and contents of the bottle do not affect the water quantity. This phenomenon is called capacity conservation.
Third, activity extension. Think about it. If you put two pieces of plasticine with the same weight into bottles with different shapes, will the plasticine become heavier?