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Also known as funny stair runners, these 10 rainbow spirals make a great little reward or gift.
Once pushed, they can run down stairs or an inclined plane.
(For stairs, however, it only works if the steps are not very deep).
The spiral spring can also be used in your physics lessons.
For example, use a spiral to show how potential energy becomes kinetic energy.
Dimensions:
Height: approx. 6.5 cm each
diameter 5.3 cm
Made from sturdy plastic.
Ref: 762436
