What you do for this ZOOMdo:
- First cut an index card in half and draw two pictures that will match up. For example, you can draw a bird on one side, and a cage on the other.
- Make sure you draw in the middle of each side of the card so your drawings will match up.
- Tape the cards -- drawing sides out -- to opposite sides of a pencil.
- Tape around the edges of the cards.
- Spin the pencil between your hands.
- If you made it right, you should see the bird in the cage.
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Thaumatropes
