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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.

The Sacred Cenote at Chichén Itzá is a sink hole, or well, containing groundwater. In this activity, learners create their own cenote using chalk, limestone, acids, and rain water.