Build a Submarine

Build a submarine that will dive down through the water and come back to the surface.

Log In

Inspiration Video

Suggested Materials

  • at least 2 60 ml plastic syringes
  • plastic tubing that fits the syringes, at least 12 inches
  • recycled plastic bottle with cap
  • at least 2 balloons
  • rubberbands
  • waterproof tape
  • scissors
Testing Station
  • tub or bowl filled with water
  • pennies or other weight to add to your submarine

Difficulty Level


This design challenge may require complex motor skills, understanding of abstract concepts, or unusual materials to build.