This demonstration uses a water balloon to show how Earth's oceans are absorbing most of the heat being trapped on our warming world.

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 determine the volume of a rock core collected by the Perseverance Mars rover.

In this illustrated math problem, students use pi to compare the area of the Hubble Space Telescope and Webb Telescope’s primary mirror.

In this illustrated math problem, students use pi to calculate the approximate density of the asteroid (16) Psyche and compare that to the density of known terrestrial materials.

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 the mathematical constant pi to find the "habitable zone" around a distant star and determine which of its planets are in that zone.

Students create a scale model of the solar system using beads and string.

Students use global temperature data to create models and compare short-term trends to long-term trends.