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Step Into Cyberspace
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In this activity, learners discover that they can modify a regular piece of paper so that it's large enough for them to walk through!
Guesswork
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In this number puzzle/trick, learner #1 thinks of a number between 1 and 63. Learner #2 shows learner #1 six cards and asks them whether the cards contain their number.
Shrinking Coin
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In this demonstration, learners attempt to get a large coin through a small hole, the size of a smaller coin.