Make Cool Gadgets for Your Room (Popular Mechanics for Kids)

Make Cool Gadgets for Your RoomWant to decipher secret messages with your own decoding machine?Need an alarm to stop your brother from snooping through your stuff?Now you can make them yourself!Using inexpensive, easily obtained tools, you can build six awesome gadgets for your room. Just follow the step-by-step directions. The colorful, detailed diagrams show how to make everything run smoothly. Handy troubleshooting tips spot problems before the job is done, and sidebars offer fascinating facts to keep you occupied while the glue dries. With the depth and accuracy you expect from Popular Mechanics for Kids, this lively activity book is any budding engineer's delight! If your fingers are itching for new projects, check out Make Amazing Toy and Game Gadgets--only from Popular Mechanics for Kids!