M A K E YO U R OW N S T E T H O S C O P E STEAM LAB TECH W0RKSH0P ANSWER. Which level of activity makes your heartbeat faster? MAKE a simple model of a stethoscope. Follow these steps: Place the funnel into one end of the cardboard tube. Secure it with tape. Use the scissors to cut off the top third of the balloon. Stretch the balloon tightly over the open end of the funnel. Secure the balloon with some tape to hold it in place. Student 1 Student 2 At rest … … After running for 30 seconds … … CHECK your stethoscope works. Take turns to listen to your partner's heartbeat. Count the beats you hear in a minute and complete the table. My heartbeat is faster when I... Doctors use a stethoscope. This instrument listens to a patient's heartbeat and breathing. You need a plastic funnel a cardboard tube from a kitchen roll insulating tape a balloon scissors a stopwatch 1 n i n e t e e n · 19
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