The second lesson, Radioactive Decay: A Sweet Simulation of Half-life, introduces the idea of half-life.
By the end of the 8th grade, students should know that all matter is made up of atoms, which are far too small to see directly through a microscope.
This lesson is the third in a three-part series about the nucleus, isotopes, and radioactive decay.
You can continue to fill the funnels as different classes arrive.
Empty the graduated cylinders between classes if the volume is more than about 25 ml.