Germs: Petri Dish & Germ Spreading Science (Immune System)

 

Not sure if this was more of a surface tension exercise or a trick to demonstrate the importance of using soap! We filled a plate with water and sprinkled (liberally, in most cases!) with black pepper (germs). Everyone dipped their finger into dish soap before touching the surface and 'voila'! The 'germs' swam away!