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Question
How much water is needed to fill a water gun (pichkari)?

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Solution
2 mugs of water is needed to fill a water gun.
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| Packet | How many mL or L? |
| Milk | 500 mL |
How much do we use at a time?
| Eye drops | We use less than 1 mL at a time. |
Find out how many
cups of water will fill your
bottle.
First guess and then try it out.
Now, fill a different
bottle with the same cup.
- Which bottle holds less water?
Try it with another
bottle.
- Which bottle holds the least water?

Select the one which holds more water.
Find out:
How much milk does your mother buy every day?
Take five different types of big vessels from your kitchen.
Fill all of them one by one with one jug full of water.
What do you see? Why?
Talk to your friends about it.
Do you want to know how the water in the
pitcher came up?
Take two
glasses of the same size.
Fill half of each glass with water.
You have to put tamarind (imli) seeds in the first glass to raise the
water to the top. Guess how many seeds you will need to put in.
Now, do it. Count the number of seeds used.
Now put the same number of marbles in the second glass.
What happens?
Repeat it with stones.
What happens now? Why?
Talk about it in the class.
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