In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

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

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

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

In this project, a basketball containing different psi is dropped to see how well it bounces.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science fair project idea identifies clouds as a means of predicting the weather.

Start your toy engines -- this is going to be a fast and friction-filled race!

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Is it a square or a circle? See if you can trick your friends with this zany science project!

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

How powerful is the reaction between baking soda and vinegar? Find out here!

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

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.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

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.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.