Make a Mechanical Leg

Make a ball and socket joint that mimics the movement of a human hip or shoulder.

Log In

Inspiration Video

Suggested Materials

  • cardboard
  • rubber bands
  • tennis ball
  • tape
  • scissors
  • rulers

Difficulty Level

1
2
3

This design challenge may require moderate motor skills, understanding of some abstract concepts, or uncommon materials to build.

This is the difficulty level for a typical 4th grade classroom. Modify as needed for other age groups.

Resources

This design challenge has downloadable resources available.
Mentors and parents with access to this design challenge can download resources.