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Rocks are made of minerals, and minerals often have crystal shapes. In this fun activity about geometry in nature, learners create their own crystal shapes out of paper.

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

Millions of organisms can live in and around a body of water.

In this outdoor activity/field trip, learners investigate organisms that live along the ocean's rocky coast.

In this activity, learners add food coloring to hot and cold water in order to see how fluids at different temperatures move around in convection currents.

Some bugs can walk on the surface of a lake, stream, river, pond or ocean.

In this activity, learners use candy pieces and a cookie to make an accurate model of the Sun they can eat. Parts of the delicious model include solar granules, sunspots, and solar prominences.

Water on Earth is in lakes, the ocean, rivers, underground, and frozen glaciers.

In this activity, learners explore a bucket of sand and beach objects.