I used this as one station in a ‘Waves Circus’ to review what students had learned about waves - in this case, refraction in particular. You need to provide an opaque cup or deep bowl, and a coin or ...

WXMI — In our science experiment today, we look at a disappearing coin trick, which really is no trick at all. It illustrates density and refraction. Some things are more dense (or heavier) than other ...

Add Yahoo as a preferred source to see more of our stories on Google. There are many glorious science-based terms when it comes to surfing. We all talk about swells, of course, the underwater energy ...