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This is a hands-on activity exploring how nanoscale particles are used in mineral sunblocks to increase their transparency.

This activity (on page 2 of the PDF under SciGirls Activity: Tug O' War) is a full inquiry investigation into tug-of-war physics. Groups of learners will test two tug-of-war strategies.

Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?

In this activity, learners make self-assembled polymer spheres.

In this ecology activity (page 8 of the PDF), learners explore how to filter contaminated water using a variety of materials.