How the Heart Works

We're currently studying "Our Bodies" which involves talking about the various systems inside our bodies as well as the outside visible features. We needed a way to try and explain how the heart works so this is what we tried ...

How the Heart Works

We filled up some balloons with water.

The first one we sealed up by tying a knot in the opening. The boys found that when they squeezed the balloon, the balloon stretched out through their hands as the water tried to escape.

This helped to explain how the heart works ... when the heart muscle contracts, the blood is forced out and around the body.

How the Heart Works

Next we moved outside. This time the balloons were pinched closed with fingers instead of being knotted closed.

How the Heart Works

When the balloon opening was released, the water gushed out.

How the Heart Works

Apart from being heaps of fun, this again helped to show how the heart works ... when the heart muscles contract, the blood moves out of the heart with force.

If you're looking for a good book to help explain how the heart works, along with the lungs, try this one ....

My Heart and Lungs - an exciting way to learn about your body! by Sally Hewitt.

My Heart and Lungs - an exciting way to learn about your body!

We found this book to be good because it includes:

  • Coloured photographs,
  • Clear, labelled diagrams/artwork,
  • Activities to expand and help explain concepts
  • And fascinating facts put in the way children can understand.

The book takes complex ideas and helps to explain them in a manner young children can understand them.

You may also like these activities:

Body Drawings
Body Drawings
How the Body Fights Germs
How the Body Fights Germs

Return to the Articles List for other children's learning activities or children's book reviews.

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