Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

This science project idea's objective is to understand how TV mysteries change expectations of mystery stories.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

In this cool robotics project, construct a motorized robot with a sensor and put it through a maze test to find the number of errors it makes along the way.

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

This science fair project idea tests the efficiency of short term memory.

What kind of fabric holds dye best? How can you improve a dyed fabric's colorfastness? In this colorful project, test colorfastness using mordants and bleach.

Explore the relationship between personality traits and birth order effects.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

How can Hooke's law explain how springs work? Learn about how Hooke's law is at work when you exert force on a spring in this cool science project.

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Science fair project that models the subterranean movement of water, using Darcy's Law. How can this information be used in hazardous material spills?

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

Use natural materials to try out a new kind of weaving. Your child will enjoy gathering their materials outside and then using them to create a piece of art!

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

This science fair project evaluates the suggestibility of males versus females in copying the actions of those around them.