Yellow Submarine
- Wind up the periscope to make the proppeller spin. Put the submarine in the water and watch it go! Also, overtime, the submarine will stay at a constant depth
- The submarine teaches children (ages 3+) about buoyance force and propulsion while in taking a bath!
- Safe for children since there are no loose parts
- Durable if not opened
Buggy Builder | BBoy Balance
John Ni
Carnegie Mellon University
January 26, 2010