Stethoscopes are used by doctors to listen to a person’s heart. The heart is a muscle that sits in your chest and works as a really powerful pump. It pumps all of the blood around your body
The first thing that you are going to do is roll your piece of card into a cone. You are then going to tape the cone so that it stays together and trim the bottom of the cone so that it is flat.
The next thing you are going to do is tape your cone to your kitchen roll tube
You can now use your stethoscope. If you put the funnel end of the stethoscope to the chest of a friend, you should be able to hear their heartbeat. If you have a watch you can count how many beats there are in a minute.
You could also compare how many times your hear beats in a minute when you have been sitting down compared to after you have done some exercise. If you do something, like 10 star jumps, or running on the spot for a minute before measuring your heart rate, does it beat more or less than if you have been sitting down for a while?
The video tutorial for this activity is available on the Surrey Libraries Facebook Page or the Surrey Libraries YouTube Channel
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