Article: Two Pictures in One.(Brief Article)

Have you ever seen one of the magic buttons that show a picture, and when you turn it a bit to the side, it changes into another picture or appears to move? I have one that shows an eye that winks when you turn it back and forth. Did you ever wonder how these buttons change from one picture to another? This experiment will show you.

WHAT YOU NEED:

* a copy of the drawing on page 46

* drawing paper, crayons, scissors, and sticky tape if you want to make your own later

WHAT YOU DO:

Simply fold the picture along the lines, and open it out in a zig-zag as shown. Set the bottom edge on a table so the pictures stand upright. Move ...

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