Thames & Kosmos Elastic Power
For the child who happens upon a rubber band and sees only mischief comes a new science kit from Thames and Kosmos. Elastic Power stretches the possibilities of that simple rubber band by exploring the principles of potential and kinetic energy through the construction of eleven different models.

Stretch Their Creativity!
From catapult to paddleboat, Elastic Power's forty-eight-page, full-color, easy-to-read manuals have all the instruction necessary to convert the 170 building pieces into cool mechanical models that use simple rubber bands as their source of energy. The highquality plastic building pieces in these sets have been specifically designed so that your child can easily assemble both illustrated models and unique vehicles of his own. For ages eight and older.