Thursday, September 24, 2009

Sophia Checking Her Pulse

By putting a small amount of play dough and a toothpick on your wrist, you can watch the toothpick move back and forth (it's a very small movement).

The girls then exercised for a bit to get their heart rate up and blood flowing faster. Did this again and you can see the tooth pick move faster.

Pretty cool - and very visual - way to learn about how blood moves through the body.

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