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The Geometer's Sketchpad
Modeling a Ferris Wheel

by Jim King

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Sketchpad Resources || Main CIGS Page
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Modeling a Ferris Wheel

Using Translations and Animation



Physical devices can be modeled using dynamic geometry. A vital tool for moving objects around in the model are the isometries, or distance-preserving transformations. This model of a Ferris wheel provides a good example.

Begin with a circle and a template for the chair.

An animation button for C.

Attach a chair at point C using a translation.

Adding more seats.

This Ferris wheel has just one seat. Let's add more seats. We will do this by constructing 3 more points on the circle to which we will attach the seats. These points, along with C, will make four points, equally spaced 90 degrees apart around the circle.

Refinements and Extensions.

 

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