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Learners observe different light sources, outdoors and indoors, using prism glasses (diffraction glasses) and color filters.

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

This activity generates learner excitement about light through the creation of a room-sized rainbow.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays.

Many people get water from a source deep underground, called groundwater.

This is an activity about turbidity, or the amount of sediment suspended in water.