In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.

In this project, different brands of microwave popcorn are tested and compared.

This science experiment has students test whether a snail moves faster on concrete or dirt.

In this project, the affect of acid rain is simulated by the acid, vinegar.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

In this investigation, an oil spill is simulated in a jar to observe the damage that oil spills have on the ocean and ocean life.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

This science fair project idea explores the egg's thin membrane.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

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

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Teach your child how butter is created by shaking up cream the old-fashioned way.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

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

Slip some science into storm watching with a homemade rain gauge!

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

This science fair project idea investigates how magnetism can defy the force of gravity.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Instead of the traditional egg hunt, try this creative variation that will result in a beautiful Easter garden.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Jazz up your patio or backyard with hip and quirky planters made from simple Mason jars.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.