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In this activity, learners explore how watermills have helped harness energy from water through the ages.

In this activity, learners of all ages will design a functional bird feeder using familiar, every day materials.

In this activity, learners construct a home-made journal with simple, everyday materials.

In this activity, learners investigate passive solar building design with a focus solely on heating.

In this engineering activity, learners will get acquainted with the basics of wind energy and power production by fabricating and testing various blade designs for table-top windmills constructed from

In this design challenge activity, learners explore the concept of biomimicry by using a natural organism's special features to design a new human object.

In this design challenge activity, learners invent an emergency shelter that can fit a person and is sturdy and quick to build.

In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

This is a tape and glue activity in which learners make binoculars that they can decorate and then use to go bird watching.

In this design challenge, learners design a storm drain cover that catches litter to protect waterways to learn about how local actions can have system-level effects.

In this activity, learners learn about the adaptations that flowers have developed which support pollination. Learners also list their personal preferences (i.e.

In this activity, learners explore how engineers work to solve the challenges of a society, such as delivering safe drinking water.

In this activity, learners observe fly behavior and then build a flytrap.