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Make Your Own Stethoscope

Grade level: Ages 11-14

Big idea

In the film Superhuman Body, we discover how advances in technology and medical devices have been key to successfully treating and healing patients.

Activity overview

Build two simple models of a stethoscope and compare which design helps you hear someone’s heartbeat best.  Listen to someone’s lungs and their breathing.  Discuss how stethoscopes help doctors.

Videos in this lesson


  • Cardboard paper towel tube
  • Gaffer tape/Duct tape
  • 3 funnels
  • 1 balloon
  • Measuring tape or meter stick
  • Clear plastic tubing
  • Scissors
  • Stopwatch