Interactive
CK-12 Foundation

Least Time

For Students 9th - 12th Standards
What is the fastest way to get from point A to point B if you are going through two different mediums, such as air then water? Scholars explore the way light travels through air, water, acrylic, glass, and diamond as they answer this...
Interactive
CK-12 Foundation

Black Hole

For Students 9th - 12th Standards
What happens to radio waves, time, and light in and near a black hole? Young scientists explore what is known about observing frequency and time at various distances from a black hole. They control the size of the black hole and the...
Lesson Plan3:27
TED-Ed

The Fundamentals of Space-Time: Part 3

For Teachers 9th - 12th
If you weren't already blown away by first two installments, check out this clip on how gravity and space-time interact! Our physicist friends, Pontzen and Whyntie, continue their discussion of these motion concepts for your high...