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Monday, December 5, 2022
HomeEducationMake Your Own Stethoscope

Make Your Own Stethoscope

STEAM Fair 2020 Activity

Thanks to Annapolis Pediatrics

Kids can use household items to make their own stethoscope and then can listen to their own heartbeat and their parents heartbeats. Talk about the heart and different places where you can feel your heart “pulse” on your body.

What you need:

  • Two funnels (Use what you have on hand or can get inexpensively at a store.)
  • 2 feet of clear plastic tubing that will fit either over or inside the funnel spouts. (Chose the tubing that best fits your funnels, so the size of the tubing will vary)
  • Balloons
  • Electrical Tape
  • Scissors


Have parents supervision when using scissors, balloons and tape.

How to make your own Stethoscope

  1. Attach balloon to funnel

    Snip the end off of the balloon. Pull the balloon over the end of the funnel and secure it with electrical tape. Be sure the balloon is pulled tight and flat.

  2. Attach tubing to funnel

    Place both ends of the tubing onto the funnels. Tape the tubing to the funnels if needed to secure the ends.

  3. Listen to your heart beat

    Be sure the room is quiet. Place the balloon end over your heart. Listen in the other end. If the sound is too faint to hear, try running around and getting your heart going. Then listen again. You could use a smaller funnel for the listening end to hear the sound better than using the larger funnel. Can you hear your own heartbeat?

  4. Count the heart beats

    Count how many times your heart beats in 1 minute.

  5. Listen to other family member’s heart beat

    Listen to your parents or siblings heartbeat. How many times does theirs beat in 1 minute?


Pretend you are a doctor, giving your family members a check-up. Welcome them to sit down, ask them how they are doing, listen to their heart, look in their ears, ask how they are doing – just like your pediatrician checks you when you come to visit the doctors office.

How does it work?

The balloon covering the funnel allows your heart beat to echo as it travels up the tube.


Let’s now find your heartbeat on other places on your body without a stethoscope! Where else can you feel your heartbeat on your body, using your fingers?

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