1. Try this experiment to gain experience about capacity conservation.

I am willing to explore the change of water and understand its main characteristics.

Activities to be prepared

1, fun exercise: ability comparison)

2. bottles marked with scales, water, recording paper and pens.

Activity process

First, observe and ask questions.

1. Show fun exercises: ability comparison

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) Two bottles with different heights

By comparing the water levels, we can see that the water in the bottle is the same.

It turns out that the height of the bottle does not affect the amount of water.

(2) Two bottles with different thicknesses are small.

Choose two identical empty bottles, pour the drinks in the bottles of different sizes, and compare how many drinks there are.

Methods: Choose a bottle, pour a bottle of drink, and mark it with strokes or post-it notes.

Pour the drink out and then pour another bottle of drink into the bottle to see if the position of the drink is consistent with the original mark.

Compared with the same amount of drinks, 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, the extension of activities.

Think about it. If you put two pieces of plasticine with the same weight into bottles with different shapes, will the plasticine become heavier?

Go back and have a try!