Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

Making your own glass cleaner is easy, effective and inexpensive!

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

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

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

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Create a bee garden to help shelter bees in your area.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

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

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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.