Lance Dragon Defends His Castle with Simple Machines

By Eric Braun

2012

First Published

4.00

Average Rating

Number of Pages

0H43M

Audio Length

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!

Avg Rating

4.00

Number of Ratings

5 STARS

40%

4 STARS

40%

3 STARS

2 STARS

20%

1 STARS

goodreads

Author

Eric Braun

Author · 35 books