Create spectacular spirals by popping a pen into a gear and moving it around a template. The three gears and two templates that come with this fun and innovative kit allow you to generate hundreds of colorful, eye-catching designs. A 56-page book explains the fascinating but easy-to-grasp mathematics governing the appearance of spirals in art and nature.The Art and Science of Spirals contains:2 pens2 spiral templates3 gears to make hundreds of different designsA book that reveals the mathematical principles behind spiral art