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In this activity, learners solidify their conceptualization of cells by building a model of a cell in a ziplock bag.

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

In this activity, learners interact with a 3-D model of a watershed to better understand the interconnectedness of terrestrial and aquatic environments.

In this activity (on pages 20-23 of PDF), learners build a model of a power plant using simple materials.

In this activity, learners create a working model of a nail clipper. This activity helps learners learn the basic principles of simple machines, engineering design and model building.