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This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

This project compares the strength of one, two, and three-ply toilet paper.

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

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.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

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.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

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

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

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

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

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 investigates whether plants can survive being frozen.

Learn whether writing things down really makes things easier to remember.

In this activity, your child will be challenged to make a tower using paper cups.