We finished out unit on the respiratory system today. That means it was experiment time. Yay! This experiment showed us how the lung & diaphragm work together to both take in oxygen and expel carbon dioxide. The boys really enjoyed seeing our experiment work.
Elvis cut the bottom off of another balloon and stretched it tightly over the bottom opening.
|Then it was time to make it work. And it did! Very cool!|
An up close look.