Materials List: Clearing a Path to the Heart

Each group needs:

  • 2 model "blocked arteries" made from about 4 inches (10 cm) of flexible tubing (~1.5-in [3.8-cm] diameter) clogged with play dough (or peanut butter); alternatively, use PVC pipe instead of tubing
  • 2 clown balloons (long and thin)
  • air pump, for clown balloons
  • 2 straws
  • 2 paper clips
  • thin wire
  • 1 pipe cleaner
  • 4 rubber bands
  • tape
  • 1 square of aluminum foil, about 3 x 3 inches [7.6 x 7.6 cm]
  • (optional) strip of metal mesh screen, about 4 x 1 inch [10 x 2.54cm]
  • Clearing Blocked Arteries Measurements Worksheet, one per student

For the entire class to share:

  • water source
  • 2 liter container (from which to pour the same amount of water)
  • large jug, bin or container, to catch poured water
  • timer (such as the classroom clock with second hand or a person's watch or phone)
  • Three Treatment Methods Images, an overhead projector transparency or printouts to show students

Cross-section diagram shows only a small, irregular passageway through thick walls.
A cutaway view shows the reduced open area in a blocked artery due to plaque buildup on its walls.
Copyright © 2008 Jay Shah, ITL Program, University of Colorado Boulder