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Learners take on the role of environmental engineers as they design water filters.

In this design-based activity, learners explore environments, ecosystems, energy flow and organism interactions by creating a model biodome. Learners become engineers who create model ecosystems.

In this activity, learners will examine a variety of seeds, describe them, and determine how they are dispersed.

In this lab (Activity #1 on page), learners explore how we see color.

Learners use engineering design principles to construct and test a fully solar-powered car. Solar car kits usually include a photovoltaic cell and motor; some include a chassis as well.