<div><p><i>The LEGO Power Functions Idea Book, Vol. 1: Machines and Mechanisms</i> shows off small projects to build with LEGO's system of gears, motors, gadgets and other moving elements. The book is filled with hundreds of buildable, clever mechanisms that demonstrate a key technique or mechanical principle.</p><p>Follow along and build rack-and-pinion steering systems, sliding doors, grasping claws, ball-shooting devices of every sort.</p><p>And just by building, you'll explore the principles of simple machines, gearing, power translation, and more.</p><p>Imagine. Create. Invent. Now, what will you build?</p></div>