Lego Chain Reactions: Make Amazing Moving Machines (build you own) by Pat Murphy
These books from Klutz are great. In this one, you can build 16 high-performance LEGO projects - amazing moving machines! More than 100 LEGO elements are included with this construction kit. Not coincidentally, they're exactly the bunch of bricks you need to make all 16 Crazy Action Contraptions (but not all at the same time).
Klutz selected these elements for their mechanicals flexibility, utility, and general awesomeness and then got to work building the best LEGO vehicles, launchers, noise-makers, gadgets, and games around.
Parents' choice award winner. 1.5+ million copies sold. Ages 7+. Includes every brick, gear & Axle you need to create 16 unique projects.Comes with 105 LEGO Bricks. Includes a 50 page instructional book with Klutz Certified crystal-clear instructions.
Klutz is a premium brand of book-based activity kits, designed to inspire creativity in every child. Their unique combination of crystal-clear instructions, custom tools and materials, and hearty helpings of humour is 100% guaranteed to kick-start creativity. Super-clear instructions. Open-ended Creativity. Rewarding Reading Skills to Build On Everything You Need.