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Learners investigate the concept of humidity by using a dry and wet sponge as a model. They determine a model for 100% humidity, a sponge saturated with water.

In this outdoor, sunny day activity, learners experiment with paper leaf models to discover how some desert plants conserve water.

By making models of light waves with paper, learners can understand why different colors appear in bubbles.

In this activity, learners construct models of plants that are adapted to living under specific environmental conditions.

In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

Educator Amy O'Donnell from the American Museum of Natural History guides learners to create a diorama of a coral reef.

In this quick activity about pollutants and groundwater (page 2 of PDF under Water Clean-up Activity), learners build a model well with a toilet paper tube.