In this illustrated math problem, students use the mathematical constant pi to determine the force observed by a hydrogen ion trapped in Earth's magnetic field.

In this illustrated math problem, students use the mathematical constant pi to determine the force observed by a hydrogen ion trapped in Earth's magnetic field.

In this illustrated problem set, students use pi to collect samples from an asteroid, fly a helicopter on Mars for the first time, find efficient ways to talk with distant spacecraft, and study the forces behind Earth's beautiful auroras.

In this illustrated problem set, students use pi to collect samples from an asteroid, fly a helicopter on Mars for the first time, find efficient ways to talk with distant spacecraft, and study the forces behind Earth's beautiful auroras.