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In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice.

In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain.

In this activity, learners discover if carbon dioxide has an effect on temperature.

In this activity, learners imagine what the world might look like if we could build an elevator to space!

In this activity, learners explore how acids can dissolve eggshells leaving behind a membrane-covered bouncy egg.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.