10
The human heart does a lot of work, but
a man’s heart weighs about as much as
two baseballs.
©2016 American Heart Association. Text and design by The Education Center, LLC
10
Gather two baseballs. Pass them around the room
to help students understand how much the heart
can weigh. Then have students speculate how
something so relatively small can do so much work.
©2016 American Heart Association. Text and design by The Education Center, LLC