What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Research long-term effects and draft a questionnaire about frequency of marijuana use and average annual income. Interpret findings in a detailed report

Devise list of randomly chosen words, test how many words volunteers can remember. Compare results of adults and children. Which have better memories?

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!

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Build basic projector out of ordinary materials. Create several color transparency slides, demonstrate your creation.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

This science fair project idea explores whether color affects a person's emotional state.

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Follow in the footsteps of movie character legends as you walk your little one through the steps of becoming a junior archaeologist.

Develop a new system for predicting geographic changes. Demonstrate the nature of geographic change. Make logical predictions.

Study and categorize the functions and types of genes. Run gene experiments chosen from links. Analyze data, explain ideas in a detailed report.

Science fair project that demonstrate how abrasions are formed on rocks in nature and the variations between types of rocks.

This science fair project idea explores whether certain physical and mental traits run in the family.

Here's one way to recycle: turn a tuna can into a mini barbecue and teach your child the power of resourcefulness!

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Evaluate whether birth order influences personality.

Study structure of the lens found in the human eye and determine whether it is concave or convex. Prepare a ray diagram, formulate hypothesis.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Ignite your kindergartener's love of adventure and learning with an imaginary trip under the sea.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Learn whether dark green and leafy veggies tend to have a higher Vitamin C content than lighter green varieties.

Help your child add some flair to the family garden with pencil pinwheels!

Instead of the traditional egg hunt, try this creative variation that will result in a beautiful Easter garden.

In this science fair project idea, kids make water dance on the surface of a hot pan with the Leidenfrost Effect.