Heart Pumping Human Body Science Experiment

How do kids learn the best?  By involving them, and getting hands-on with science!  This real-life method- is a great way for them to learn more about the subjects that we are covering throughout the year.  This heart-pumping science experiment is easy to set up and have fun with.

What you need:

– a clear jar – a balloon – 2 plastic bendy straws – water – food coloring (optional) – tape – scissors

Step 1

Add a few drops of food coloring to a cup or so of water.

Step 2

Cut the balloon where the neck starts to widen into the balloon.

Let's Make This!

Step 3

Stretch the balloon over the mouth of the jar, you want it to be as flat as possible. Cut two tiny holes in the balloon, slightly smaller than your straw holes, about an inch apart.

Step 4

Take the neck of the balloon and wrap it around the end of one straw. Tape it in place. It doesn’t have to be fancy just enough to prevent water and air from going into or out of that straw.

My straws would not stay uncrossed in the jar, but it does not affect how it works. I would recommend having a pan under your jar or doing this over a sink to contain the water mess.

Now press down lightly onto the balloon you have stretched over the jar mouth. Watch what happens.

Step 5