On week three of our sky lesson, we got to meet at the park for Cheri, our fitness expert, to talk to the kids about how our body uses the air around us. She passed out different respiratory vocabulary words printed on mini lungs. When she used one of the words in her lesson, the kids with that vocabulary word got to hold up their lung. 
(I really don't think Julie was confused. I think the sun is just right behind Cheri, making it hard to see.)
Next, we got to see who held the most air in their lungs by breathing into party blowers and seeing who could hold theirs the longest. Moms won that one. Must be because our lungs are bigger.
The kids felt the weight of a bucket of water. So what happen to our lungs if we go deep under water?
True to her trade, Cheri had the kids measure their breathes before and after different exercises. Why did you breathe faster after you exercised?
Then Cheri spread out lots of red balls to represent oxygen. The kids had to pick up a red ball, run it to a bucket filled with blue balls (carbon dioxide), and swap out a blue ball for their red one.
Couldn't end our lesson without a little teamwork hand huddle.
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