In this lesson, students use their knowledge of moon phases to build a calendar they can use to find out when and where to see each phase of the Moon throughout the year.

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.

Students use math to understand why a leap day is inserted into our calendar every four years.

In this illustrated math challenge, students use the mathematical constant pi to calculate how much fuel the Cassini spacecraft consumed after years of orbiting Saturn.