Mystery Stick

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Fool your friends with this scientific wonder!

The concept of rotating a propeller on a notched stick has been around in some form for many years. Vibrations produced by rubbing the notches can make the propeller switch from turning clockwise to counterclockwise, or vice versa. Very mysterious indeed! Have fun with your friends by making it appear that the propeller changes direction in response to a spoken word or phrase. Easy-to-follow instructions included.

We recommend for ages: 6+