Last week, fifth grade performed a lab where they witnessed the circulatory system in action. Students placed live goldfish in Petri dishes and looked at their tails under the microscope. They were able to see blood circulating through the fish’s tail in real time. After the lab, the goldfish were released to the pond in our outdoor laboratory space. All elementary students, Pre-K3 through 5th grade, visit the science lab weekly for hands-on application of what is being taught in the classroom. Disclaimer: no fish are harmed during this experiment.