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In this activity, learners make a simple spring-like scale using a rubber band instead of a spring, and calibrate the scale in newtons (N).

In this math lesson, learners identify the likelihood of an event by using a walk-on probability scale.

In this activity, learners will create a diagram of the ocean zones and determine what organisms live in each zone.

Learners construct and use a "real" 3D coordinate system out of balsa wood and foam core. They will then be able to locate coordinates in space.

In this activity (on pages 16-21), learners get a sense of geological time by understanding how big a million is.

In this math-based activity, learners model the intensity of light at various distances from a light source, and understand how astronomers measure the amount of sunlight that hits our planet and othe