Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

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.

Cleaning can be a chore, but not with this sudsy experiment!

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

In this science fair project, students use the streak test to tell minerals apart from each other.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Plants and light seem to be good buddies, but how far does the friendship really go?

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

This science fair project idea examines whether boys and girls differ in reflexes.

This activity allows your kindergartener to translate what they observe into a beautiful poem.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

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

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

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.