"The lungs are an essential organ to all Mammals. It is the organ that allows for gaseous exchange to ensure we get the most important product Oxygen into our bodies and also exhale the waste products. Sometimes it is hard for kids to understand how body parts works and being able to label a diagram is not enough. So today we are going to do a fake lung experiment to show visually how it works."
Repurposed $1 pool noodle as a working model of one's vertebrae. I love ideas that take "everyday" objects and turn them into something new and different. Could be a group project to create this and compare vertebrates and invertebrates.