DIY Stethoscope Tutorial~Science Experiment for Kids

Materials

• Two funnels~We experimented with a few different sizes. 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.~I took our funnels to the hardware store and chose the tubing that best fit our funnels, so the size of the tubing will vary.
• Balloons
• Electrical Tape
• Scissors

Steps

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

3. 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. We used a smaller funnel for the listening end, and this helped us hear the sound better than using the larger funnel. The first time the kids hear their heartbeats they are amazed! I was a bit amazed that it worked, too!

4. Of course, you can expect a lot of pretend play and check-ups when your done. Enjoy!

Now it’s your turn. We’d love for you to share how you

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