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MATERIALS: |
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· Paper cup · Disposable diaper · Starch glue (or paste) · Scissor · Water |
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PROCEDURE: |
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Taking it further |
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1. Try opening other absorbent material such as sanitary napkin or adult diaper. See if you can use it on your magic trick. 2. Use other kind of liquid such soda and see the difference and duration of time before it was absorbed by the polymers. |
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1. Cut the diaper into half. Take out the grains inside the cotton or you can shake it off so that the grains will easily fall. Note that there are small cottons that will come out together with the grains, make a way to remove it from the grains. |
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2. Coat the bottom of the paper cup with starch glue. 3. Put the grain in the paper cup. Spread evenly |
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MAGIC PORTION! |
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1. Show student the inside of the paper cup quickly to convince them that the cup is empty. Then you can also turn the cup downward to convince them more. |
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2. Put a small amount of water about 1 cm in depth. Wait for a while until the grains absorb the water. While waiting, you could make a humorous short talk to your class. |
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3. When you think itfs about time, you could turn the paper cup downward. THE WATER DID NOT FALL!!! |
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Grains inside the cup after absorbing the water. |
