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In this activity, learners use tonic water to detect ultraviolet (UV) light from the Sun and explore the concept of fluorescence.

In this demonstration, learners observe vinegar and baking soda reacting to form carbon dioxide (CO2) gas.

Learners discover that their breath contains carbon dioxide, one of the pollutants found in car exhaust.

Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

In this activity, young learners will model land and water on the Earth's surface to make a unique piece of "Earth Art." Activity includes materials list, step-by-step instructions, STEM connections a

Ocean acidification is a problem that humans will have to deal with as we release more and more carbon dioxide into the atmosphere.

In this activity, learners will make their own prism and use a glass of water to separate sunlight into different colors.