| Can you tie a knot in a string without letting go of the string?Hand someone the ends of a string as in the picture, and challenge him to tie a knot in the string without letting go of the string. He can't do it! |  |
| Here's the secret!Fold your arms, and then grab one end of the string in each hand. |  |
| Slowly unfold your arms.You tied a knot without letting go of the string! |  |
Sunday, December 12, 2010
Tying a Knot
Tying a Knot
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