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In this two-part activity, learners explore the properties of liquid crystals, which are responsible for why mood rings change color.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.

In this activity, learners construct a projector out of cardboard to view their favorite images (such as storybook illustrations) on the wall.

In this activity, learners construct a device that projects images onto a surface, so they can trace landscapes and other sights.

In this "Sid the Science Kid" activity, learners set up a simple experiment to find out how sunscreen counteracts the effects of the sun.

This simple hands-on activity demonstrates why the sky appears blue on a sunny day and red during sunrise and sunset.