Explains the operation of scores of machines, devices, instruments, and toys that children are most curious about.

Packed with trucks, cars, ships, and planes DK's The Big Noisy Book of Things That Go is filled with amazing facts for young children. Discover every type of tr

"This book explains the science behind all the machines, gadgets, systems, and processes we take for granted. The perfect book for techies--young or old, male o

An amazing flap book packed with inventions, machines, gadgets and devices, and facts and information about how they work. Over 90 flaps reveal the insides of c