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In this activity, learners explore the different salinities of various sources of water by taste-testing.

Learners conduct a "blind" taste-test of several types of enhanced or fitness water drinking water that has commercially added substances like vitamins, sugars, or herbs.

In this activity, learners make their own heat waves in an aquarium.

This is an activity about our sense of smell and how it compares to sharks' super noses. Learners will create varying solutions of water and perfume.

In this activity about light and refraction, learners make a lens and magnifying glass by filling a bowl with water.

This activity is about how you form mental images of your body's position in space, independent of vision. Can you take a sip of water from a cup with your eyes closed?

In this optics activity, learners explore color by examining color dots through colored water and the light of a flashlight.

In this activity, learners use simple materials to create giant bubbles.

In this activity, learners create a xylophone by filling glasses with different amounts of water and tapping them with a metal spoon.

In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.

This lesson (on pages 15-24 of PDF) explores how sound is caused by vibrating objects. It explains that we hear by feeling vibrations passing through the air.

This is a quick activity (on page 2 of the PDF under Butterfly Wings Activity) that illustrates how nanoscale structures, so small they're practically invisible, can produce visible/colorful effects.

This is a quick activity (on page 2 of the PDF under Stained Glass Activity) about the "Tyndall effect," the scattering of visible light when it hits very small dispersed particles.