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

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

The goal of this science fair project is to demonstrate magnetic forces of attraction and repulsion using a magnet and everyday objects.

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

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

Discover the force of water! This article provides step-by-step instructions for creating your own science experiment.

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Try this simple activity with your middle schooler to help him develop an understanding of why scientific classification systems exist and how they work.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

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

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Science fair project that determines what percentage of air is made up of oxygen by examining the chemical reaction between oxygen and rust.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

In this science fair project, students make their own rain gauge to measure rainfall.