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In this activity, a spinning bicycle wheel resists efforts to tilt it and point the axle in a new direction.

You may have tried to throw a curveball or a slider, or even a screwball, with an ordinary baseball and found it difficult to do.

This is an activity about friction as well as kinetic and potential energy.

In this activity, learners design and build a toy top out of simple, everyday materials and have the option to use the toy as an artistic tool.