Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

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

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Look for correlation between pH values of commercial soaps and detergents and manufacturer claims about eye irritation hazards.

Science fair project that tests the effects of diluted soap on the size of bubbles blown from the solution. Will dilution cause smaller bubbles?

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

This experiment uses personality assessments to evaluate if certain personality traits are more common in people with unusual first names.

Learn how to relight a candle by lighting the vaporized wax in the smoke, and test how various kind of wax and candle brands relight differently.

Your child can create his own texture tree, experimenting with design during the process. The result will be a beautiful addition to your holiday decorations

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Help your child measure breezy weather in her environment by making a wind vane for kids, a simple version of the classic scientific measurement tool.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.

Test ability to distinguish between natural and artificial aromatherapy oils. Select fragrance, natural and synthetic sample. Volunteers state preference.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

This science project has students study the idea of human beauty.

This science fair project evaluates which sense produces the fastest response time: hearing, touching, smelling or seeing.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

This science fair project idea studies whether eating a hearty breakfast before and exam will get them better test scores.

In this middle school activity, your child will learn how to press plants and create her very own herbarium, or plant library! Here's how:

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

This science fair project examines how seeds hitchhike on animals and clothing.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

This experiment evaluates if the temperature of the environment that you work in affects your ability to perform mental tasks.

Test the effects of left and right handedness on writing speed and penmanship. Volunteers hand-copy the same paragraph of text, which samples look neater?