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In this activity, learners will explore pi and the mathematical relationships between a circle's diameter, circumference, and radius.

In this math activity related to volume, learners use problem solving skills to calculate and build a model house for Minus the dog.

This is a classic exercise for visualizing the scale of the Solar System.

In this activity, learners build a scale model of the solar system using a roll of toilet paper.

In this math lesson, learners design an experiment to model a leaky faucet and determine the amount of water wasted due to the leak.

In this activity (on page 6 of the PDF), learners plot the path of the sun's apparent movement across the sky on two days, with the second day occurring two or three months after the first.

In this math lesson, learners determine and compare the rate of descent of various learner-constructed parachutes. Learners construct parachutes that will have maximum hang times.

In this small-group activity, learners assume the roles of pilots, air traffic controllers, and NASA scientists to solve five Air Traffic Control (ATC) problems.