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Task with Student Directions
Contributed by: Assessment of Performance Unit (APU)

Task: At this station, you will determine the effects blocks of different masses have on a wig-wag apparatus.


  • Wig-wag
  • Various block weights

This piece of apparatus is sometimes called a "wig-wag."

Push the end sideways a few centimeters and let it go.

Now put the block with the red sticker on it into the tray and push it sideways again.

  1. What difference does putting the block into the tray make to the way the "wig-wag" moves?

  2. Now try each of the other blocks and say what you notice about the effect the blocks have on the way the "wig-wag" moves.



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