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Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

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

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

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

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

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!

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

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

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.

In first grade, children are introduced to fractions. Here's a recipe that combines fraction practice with winter fun and lets kids actually paint the snow!

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.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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

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.

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