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In this optics activity, learners explore color by examining color dots through colored water and the light of a flashlight.

In this math activity related to light, learners assemble a photometer and use it to estimate the power output of the Sun.

In this pencil and paper activity, learners work in pairs and simulate how astronomical spacecraft and computers create images of objects in space.

In this activity, learners use earthworms as "unknown creatures" from the South American jungle to find out how animals use senses.

In this geography investigation, learners use a nighttime satellite image to observe areas of light across the United States and to identify patterns and spatial distributions of human settlements.

In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs.