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In this outdoor water activity, learners explore evaporation by painting with water and tracing puddles. Learners will discover that wet things become dry as the water evaporates.

In this activity, learners investigate how different materials repel or absorb water. Learners use spray bottles to explore how everyday items like sponges, cardboard, feathers, etc.

In this activity, learners calculate the number of milliliters of water a nearby tree transpires per day.

In this sunny day activity, learners compare how a cup of water and a cup of tonic water reflect or refract light in the sun.

Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

This activity shows you how to make amazing crystal spikes using Epsom salt and the sun.

In this activity, learners capture and observe planaria, which are worms that eat tiny pond critters.

In this activity, learners model atmospheric convection currents using food coloring, water, and clear cups. Activity includes step-by-step instructions, STEM connections, and more.

In this activity, learners make water rockets to explore Newton's Third Law of Motion. Learners make the rockets out of plastic bottles and use a bicycle pump to pump them with air.

In this biology/ecology activity, learners construct a terrarium out of a tennis ball container. This terrarium is unique because it never has to be watered.

In this activity, learners investigate and compare the rate of drying in different conditions.

In this activity, learners explore the different heating properties of soil and water.

In this activity (located at the top of the page), learners make an easy river strainer and see what they can catch.

In this math lesson (on Page 13), learners predict and simulate the likelihood of an event occurring.