McREL International
Mc Rel: Whelmer #33 Learning Activity: Density Balloon
A simple activity that investigates the effect of heat on the volume of a gas. The activity is presented in lesson plan format that meets NSES standards.
McREL International
Mc Rel: Whelmer #67 Activity: Bells in Your Ears
An easy to do, fun activity that investigates sound waves. The activity is presented in lesson plan format that meets NSES standards.
TeachEngineering
Teach Engineering: Changing Fields
This instructional activity begins with an activity in which students induce EMF in a coil of wire using magnetic fields. Then, demonstrations on Eddy currents show how a magnetic field can slow magnets just as Eddy currents are used to...