Gravity Well In Stock Now

The gravity well is a custom-built item that combines a hula hoop and a large sheet of spandex to allow for whole class demonstrations of how planetary bodies with differing masses affect the fabric of space time (spandex).


  • Spandex sheet
  • Large hula hoop
  • Clamps
  • Marbles
  • Steel ball bearings
  • Ping ping balls
  • Bocce balls

Find the complete lesson plan here.