Hey, dudes! Skateboarding is my thing, but when barbarians invade my castle, I have to defend myself. Watch me launch a water balloon with a lever and lower a key with a pulley. Roll with me and find out how simple machines simply rock!
| ISBN: | 9781404877085 |
| Publication date: | 7th January 2012 |
| Author: | Eric Braun |
| Illustrator: | Anthony Briglia |
| Publisher: | Picture Window Books an imprint of Capstone |
| Format: | Paperback |
| Pagination: | 24 pages |
| Series: | In the Science Lab |
| Genres: |
Educational: Technology |