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In this activity, learners overlap the three primary colors to see how all other colors are made.

In this math activity related to light, learners explore why a light, such as a candle or a streetlight, looks dimmer the farther away from it we get.

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

In this activity about light and perception, learners create and observe moire patterns.

In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

In this activity, learners create a simple “top” from a CD, marble and bottle cap, and use it as a spinning platform for a variety of illusion-generating patterns.