Students define and discus the concepts of wave fronts and rays. In groups, they distinguish between specular and diffuse reflections and use Snell's Law to predict the path of light rays. They calculate the speed of light through...

[Free Registration/Login may be required to access all resource tools.] Definition of speed and its SI unit, instantaneous speed and how to calculate average speed and distance or time from speed.

Created to teach students of the 21st century, SOPHIA is bringing relative velocity straight to your fingertips. Become the commander of your own learning experiences as you take part in this interactive lesson.

Created to teach students of the 21st century, SOPHIA is bringing relative velocity straight to your fingertips. Become the commander of your own learning experiences as you take part in this interactive lesson.

Is it scientifically possible to have super speed? Find out in this TED Ed series about the science of superpowers. [4:51]

[Free Registration/Login may be required to access all resource tools.] Difference between velocity and speed, using vector arrows to represent velocity, objects that have different velocities and how to calculate average velocity.

[Free Registration/Login may be required to access all resource tools.] Outlines how to calculate the speed of a moving object.

Amelia is a researcher. She studies the speed of animals. Join her in Antarctica to help her figure these calculations.

[Free Registration/Login may be required to access all resource tools.] How motion and speed can be represented by a distance-time graph and how average speed can be calculated from it.

Using only two of our fundamental units, time and displacement students will build a framework to predict the motion of objects, starting with one dimensional motion.

[Free Registration/Login may be required to access all resource tools.] How to use parallax to measure distances to stars.

A learning module where students gain an understanding of the relationships between the different kinds of motion. Students will be able to explain free-fall motion and use kinematics equations to calculate problems involving falling...