This science fair project idea provides evidence that air is everywhere and takes up space.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

This science fair project idea identifies trees using a dichotomous key.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Give your budding young observers a chance to discover simple machines at use in their own home.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

In this science fair project, students use the streak test to tell minerals apart from each other.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Let your fabulous crafter use their favorite flowers, fruits and herbs to whip up a delicious perfume that they can proudly present to a friend or a loved one.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

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.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Construct and experiment with a periscope using reflected light rays to gather an image.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

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

In this design challenge, your child will make a bottle rocket using typical household items.

In this design challenge, your child will create a parachute for a small toy using typical household items.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

In this science fair project you will make a model of a cell membrane using very simple material.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.