Down to Earth

Here is a fabulous set of teacher's notes that will make your next hands-on gravity and force lab fun and interesting. These notes provide you with three activities that allow children to make and test hypothesis regarding force,...

What a great idea for scientific inquiry. This lab was intended for use as children explored a college campus, but it could be used anywhere. They go to three different places on campus and conduct a simple experiment that shows an...

I would weigh less on the moon? Send me there, then! On the top of the first page, a cartoon image demonstrates the difference between Earth and the moon. It then goes on to describe weight and mass and provides five practice problems...

This PowerPoint is a gem! Seventy-eight slides present an entire introduction to matter in bullet-point fashion. Viewers learn about everything from mass and inertia to phase changes and gas laws! The only glitch is that the links to...

The three states of matter are the focus of this chemistry video. Sal uses the example of a water molecule and explains in great detail the forces present that allow the molecule to change between a liquid, a solid, and a gas. Of course,...

It's hard to explain stuff you can't see! But, this animated stick-figure drawing describes dark matter and how we know it exists. It likens the galaxy to a merry-go-round, holding the stars on their circular path. The one-minute...

You may not realize it, but you get pushed around every day. What forces are acting upon you? Young physicists explore gravitational force and normal force in a video that demonstrates both forces and their directions as they move...

Sir Isaac Newton was the first person to recognize the concept of gravity. Here is a video that introduces learners to "think of gravity like the invisible super glue that holds our massive world together."

May the force be with you! Learn how to present the content of PS2A, Forces and Motion, using the strategies in the video. With fun scenarios that include Angry Birds and toilet paper, demonstrating the relationship between force, mass,...

Is it possible to defy gravity? Not really. With force and inertia, we can act against it for a little while, but, eventually, gravitational force will pull us back to Earth. The relationships among mass, force, and inertia are all...