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Learners build models to learn about the special cells and structures that plants use to move water from their roots up through the stems and leaves.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

In this activity, learners discover that there is space between molecules even in a cup "full" of water. They first fill a cup with marbles, and then add sand to fill the gaps between the marbles.

Learners gain an intuitive knowledge of the physical aspects of watersheds by creating their own watershed models.

In this activity about dinosaurs and survival, learners use scrap materials to create a miniature dinosaur habitat that includes a food source, water source, and shelter.

Learners work in groups to construct bridges using stale marshmallows and toothpicks.

Learners build models of sinkholes to gain an intuitive knowledge of their physical aspects.

Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline.