To learn why, where, and how earthquakes happen, you need to familiarize your students with the interior of the Earth and a model called plate tectonics. The engine behind the earthquake machine is ...

We take over the Operation Ouch! lab in this fun science lesson for 7-11 year-olds all about healthy hearts and circulation. Dr. Chris and Dr. Xand van Tulleken explain where the heart is in the body, ...