Quickly and easily model how colors reflect, absorb, and interact with each other in the classroom or online using your computer’s camera.

In this lesson, students build a paper helicopter, then improve the design and compare and measure performance.

Students modify a paper cup so it can zip down a line and drop a marble onto a target

Students build a rubber-band-powered rover that can scramble across the room.

In this illustrated problem set, students use pi to compare the sizes of Mars landing areas, calculate the length of a year for a distant solar system object, measure the depth of the ocean from an airplane, and determine the diameter of a debris disk.

In this illustrated math problem, students use pi to compare the size of the landing zones for the Mars rovers Curiosity and Perseverance.

In this illustrated problem set, students use pi to determine the size of a Mars dust storm, estimate the water content of a rain cloud, gauge how much Jupiter's Great Red Spot has shrunk and calculate the strength of a laser used to explode ice samples.

In this illustrated math problem, students use pi to calculate how much water could be contained within a cloud.

Students design and build a shock-absorbing system that will protect two "astronauts" when they land.