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How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

This classic children's game demonstrates how sound travels through air vs. through a solid.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

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.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

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

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea determines what household items are good conductors of electricity.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.