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In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

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.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Help your kindergarten science maven explore the water cycle without getting everything wet.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.