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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.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

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

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

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

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

In this project children practice the scientific method while playing with puffy paint.

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?

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

This science fair project idea investigates how the shape of an object affects drag.

Checkerboard play challenges students to use spatial reasoning and computational thinking.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

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

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

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

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

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.