Spectacular Spirals: Make Dozens of Beautiful Designs

Pop a pen into a gear, move it around a template, and you've got a spectacular spiral! The three gears and two templates that come with this innovative kit allow you to generate hundreds of colorful, eye-catching designs, while the accompanying book explains the fascinating yet easy-to-grasp mathematics governing the appearance of spirals in art and nature.

 
Kit includes:
- 56-page paperback
- 2 pens
- 2 spiral templates
- 3 plastic gears to make hundreds of different designs