Materials List: Exploring Variables While Testing & Improving Mint-Mobiles
(for High School)

Each group needs:

For the entire class to share:

  • plastic drinking straws (about 100 total; make sure the straw diameter is smaller than the mint candy’s hole diameter)
  • Popsicle sticks (about 60 total)
  • Lifesaver-shaped candies, such as Lifesaver® mints (about 100 total)
  • index cards or thin cardboard or poster board scraps the size of index cards (about 30 total)
  • tape, any type; duct or masking preferred; cut into 15 cm (~6 in) long strips
  • ramp, for testing, made from sturdy poster board, rigid cardboard or thin wood
    • Gather two pieces of poster board, rigid cardboard, or thin wood of different lengths, for testing the independent variable of ramp length
  • masking tape, for securing the ramp
  • meter stick, for measuring the distance traveled
  • pennies (about 60 total)
  • scale (kitchen scale or similar, must be able to measure mass in grams)
  • (optional) hot glue gun and glue sticks
  • (for optional extension activity)
    • markers and/or colored pencils
    • scotch tape
    • poster board