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

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.

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

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.

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.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Discover which fabrics shrink the most in the wash and why.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

This science fair project idea explores the different properties & interactions of sugar molecules.

In this science fair project, students create their own miniature salt flats at home.

This science fair project idea explores which fruit molds the fastest.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.