| Rub a plastic comb hard with a woollen cloth. |
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| Bring the comb near to some small pieces of paper and find out what happens. |
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| Rub a sheet of paper hard with a brush. Bring a corner of it near to a table tennis ball. Notice what happens. |
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| Place a sheet of paper against a smooth painted wall. Hold it in place and rub it firmly with a brush. What happens when you take your hand away? |
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