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.

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

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

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.

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!

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

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 substances that cause a bubble to last longer.

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 adding gelatin causes a solid to have a higher melting point and/or melt slower.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Test your friends to find out if you can replicate the placebo effect's incredible results.

Make a backbone model to explore human anatomy and life science.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

In this project students experiment with making music using only glasses of water.

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.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea explores whether talking to a plant will help it grow.