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Low-Tech Water Filter for High-Impact Clean
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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.

Salting Out
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In this activity, learners create a mixture of water, alcohol and permanent marker ink, and then add salt to form a colored alcohol layer on top of a colorless water layer.

Water Filter
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In this engineering activity, challenge learners to invent a water filter that cleans dirty water.

Exploring Materials: Hydrogel
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In this activity, learners discover how a super-absorbing material can be used to move a straw.

Bone Basics
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This is an activity (on page 2 of the PDF under Bone Regrowth Activity) about the two main components of bone - collagen and minerals (like calcium) - and how they each contribute to its flexibility a

Gelatin Used for Drug Delivery
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In this activity, learners discover how gelatin can be used as a medium for drug delivery. Learners create colored gelatin and then cut out pieces of the gelatin to simulate medicine (pills).

Sugar Crystal Challenge
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This lesson focuses on surface area and how the shape of sugar crystals may differ as they are grown from sugars of different coarseness.