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This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

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

Science fair project that explores the natural process of limestone formation.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

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.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

This project involves the programming and development of a 3D Rubik's Cube application using C++.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Check out this cool science fair project idea to explore the relationship between pulse rate and blood pressure in healthy people.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Free science fair project idea examining how different types of water affect plant germination and growth.

This science fair project idea investigates food preference of birds.

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.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Determine if it is easier to memorize colors, words, words in phrases, pictures or numbers. Determine at when retention rate in each category is the best.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.