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In this activity, learners explore how water behaves differently when it comes in contact with "nano sand" and regular sand.

Learners observe a bottle containing water and oil. They are invited to pick up the bottle and mix the contents together.

Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

In this activity (on page 2 of the PDF), learners explore surface tension by adding pennies to cups which are "full" of plain water or soapy water.