Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

Develop a new system for predicting geographic changes. Demonstrate the nature of geographic change. Make logical predictions.

Bring the crisscrossing lines of highways and the sprawling webs of metropolitan cities to your dinner table!

Help your preschooler understand that the surrounding world is made up of a varied combination of land, air and water with this simple activity.

Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.

This science fair project idea explores how length affects the weight a bridge can hold.

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

In this cool elementary school science fair project idea make a model to learn what happens to the Earth's surface when ice moves over land.

This clay "painting" activity encourages and supports creative development and critical thinking skills.

Challenge your fourth grader to try to recreate the geography of her state using just flour, salt, and water.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.