Materials List: Hanging Around:
Gravity and Slinky Spring Scales

Each group needs:

  • 1 mini slinky or other lightweight spring, available online
  • 1 paper cup
  • 25 cm of string
  • tape
  • 2 rulers
  • a few books or another heavy object to hold 1 ruler down on a table or desk
  • 6 small objects with identical weights, such as pennies, quarters or marbles