How to Make a Homemade Stethoscope
A stethoscope is fun to make. You can use it to listen to someone else's heart beating, lungs taking in air and expiring CO2, or their tummy rumbling and gurgling. It allows you to learn a lot about the human body. Also, if your child says she isn't hungry and you suspect that she's lying so she doesn't have to eat something she doesn't like, you can listen to her tummy and see if she really isn't hungry by listening for rumbles. There are many other sounds you can listen to besides these.