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In this activity, learners explore properties of water and watch evaporation happen by "painting" with water in the sun.

This activity guide features three related explorations to help learners ages 3-6 investigate shadows via the following science concepts: A shadow is made when an object blocks the light; you can chan

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

This fun and simple hands-on astronomy activity lets learners make 3-dimensional models of the Earth and Moon.

In this Bob the Builder(TM)-themed activity, learners go on a nature walk outside and describe what they observe using their senses.

In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction.

Learners complete a series of hands-on and investigative activities to explore cumulus clouds.