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In this activity, learners explore the relative sizes and distances of objects in the solar system.

This is an activity that models the operation of a seismograph, a tool used to measure the size of earthquakes.

In this activity, learners use a straight line to learn about circles. Learners measure and record the diameter and circumference of different sized cylindrical objects on a chart.

Albert Einstein proved that space bends around anything that has mass. This activity uses Jell-O's ability to bend around objects as a model for space bending around planets and stars.

Learners build at least two different spinners (tops) to investigate how mass distribution, size, and shape affect the length of time the spinner spins.

In this activity, learners complete a series of drawing activities to explore scale and powers of 10. Learners first trace each other on 1-meter-square pieces of paper.

Using indirect methods, learners determine the shape and size of a piece of carpet hidden under a piece of plywood.

The goal of this activity is to design, build and test a house or toy for an animal.

In this outdoor activity, learners discover how the environment around a building affects the growth of plants.

In this activity, learners explore how the shapes, sizes, and distances of land masses appear differently on two different models of Earth: an icosahedron and a flat map.

In this activity, learners explore the great pump in their chests--the human heart!