Note: Do the pendulum experiment first, and when you’re done with the heavy nut from that activity, just use it in this experiment.


You can easily create one of these mystery toys out of an old baking powder can, a heavy rock, two paper clips, and a rubber band (at least 3″ x 1/4″).  It will keep small kids and cats busy for hours.


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2 Responses to “Mystery Toy”

  1. It’s hard to say without seeing your project. Can you be more specific, and let me know what happened (or didn’t), and send me a photo/video of the inside? [email protected]

    Part of being a great scientists is learning how to observe things carefully, especially when things happen that you don’t expect (or don’t happen that you do). Most people give up, when really it was only a quick fix or adjustment that needed to be made.

  2. When I did my project it did’t work.Do you now what’s wrong?