How do you build a working model heart out of easy-to-find materials?

Answer 1

You'll need 4 small plastic bottles for chambers
and two larger ones for the lungs,
clear tubing for blood vessels, a pump or two, since blood goes from the left ventricle to the aorta and from the right ventricle to the lungs at the same time, and modelling clay to leak proof the model. Remember to include the aorta, pulmonary veins, pulmonary areteries and vena cavas. Get the tubing from a hardware store and pump from a pet store (for a fish tank). You'll also need red food coloring and water for blood. You also need a box to put it in. Decorating the box is up to you.

Answer 2

To build a working model heart out of easy-to-find materials, you can use playdough or clay to sculpt the shape of the heart, bendy straws for blood vessels, and a balloon or rubber glove for the balloon or pump. Connect the straws to the balloon or glove to mimic blood flow. Add food coloring to represent blood and demonstrate circulation.