How machines work : zoo break!
Sloth and Sengi are friends. they have grown up together in the zoo, and know every bit of their enclosure. And, frankly, they are a little bored with it. So they begin to plan an escape, with the help of some simple machines ... This book introduces such simple machines as levers, gears, planes, an...
| Main Author: | |
|---|---|
| Format: | BOOK |
| Language: | ENGLISH |
| Published: |
Dorling Kindersley Limited
2015
|
| Subjects: |