Materials List: Creating Model Working Lungs:
Just Breathe

Each group needs:

  • 2-liter empty plastic bottle with cap
  • 2 plastic drinking straws; available inexpensively at restaurant supply stores or donated by fast-food chains; do not use the flexible drinking straws
  • 2 9-inch balloons
  • 1 larger balloon; for example, for a punch ball
  • 2 rubber bands
  • Lung Worksheet, one per student