In this illustrated problem set, students use pi to calculate the size of a Mars rock sample, compare the mirrors of two space telescopes, deduce an asteroid's makeup, and size up a solar eclipse.

In this illustrated problem set, students use pi to calculate the size of a Mars rock sample, compare the mirrors of two space telescopes, deduce an asteroid's makeup, and size up a solar eclipse.

In this illustrated math problem, students use pi to figure out how much of the Sun’s disk will be covered by the Moon during an eclipse and whether it’s a total or annular eclipse.

In this illustrated math problem, students use pi to figure out how much of the Sun’s disk will be covered by the Moon during an eclipse and whether it’s a total or annular eclipse.