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Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.

In this science fair experiment, middle school students evaluate whether tone of voice can influence our ability to remember a list of everyday objects.

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

In this project children practice the scientific method while playing with puffy paint.

Here's how you and your teen can stage your own formal debateâbeyond arguing why chores are unethical! Formal debates improve teens' critical thinking skills.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Do thick liquids flow faster than thin liquids? Examine water and syrup's viscosity and inertia to learn about the Reynolds Number, laminar and turbulent flow.

Is garlic antibacterial? Antimicrobial? Kids find out by using common kitchen equipment and ingredients in this cool and easy microbiology science fair project.

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Illustrate the idea of light refraction with this exciting and mystifying experiment.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Research active ingredients in anti-aging creams. Test skin creams on volunteers, document the effectiveness of the creams with before an after photographs.

Science fair project that determines how your mirror image differs from your actual image and how virtual images are constructed.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Find out which type of sponge holds the most water.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

This cool middle school science fair project idea helps students explore the role phototropism plays in the growth of green plants.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!