Fascinate your friends by completing an ordinary task in an extraordinary way.  Learn to build 10 LEGO® machines that can swing, pivot, roll, lift, and drop. Then connect, rearrange, and experiment with the machines to create a chain reaction. With this book in hand and a handful of basic bricks from your LEGO® collection, the only other thing you'll need is a little imagination. Includes: 80-page book of instructions 33 LEGO® pieces Instructions for 10 machines 6 plastic balls String Paper ramps