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

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

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.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project idea explores the egg's thin membrane.

This project determines what category of person is most likely to be ticklish.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

This project investigates the affect of storage temperature on microwave popcorn.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

This science fair project idea explores whether talking to a plant will help it grow.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project idea determines which method of hand cleansing is the most effective.

Find out whether putting something on top of a plant will inhibit its growth.