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This science project examines the thermal properties of several major greenhouse gases.

In this experiment, you will find out how human error can cause faults in any science task. This includes experiments conducted by famous scientists also.

This simple activity is not only fun, it's also a useful way to organize children's closets — and offer kids some autonomy to boot.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

This science fair project idea provide quantitative data about how well the use of ASL ( American Sign Language) works in communicating with babies.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

Determine if âdouble dippingâ chips really spreads more germs than dipping only once per chip.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Want to get your bookworm interested in science? Check out this cool activity that teaches kids how to write science fiction!

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.

Check out this cool science project idea to explore the differences in feeding behaviors of birds and if other species of birds also have color preferences.

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

This biodiversity project examines the biodiversity in your own backyard.

In this activity, your child will be challenged to make a tower using paper cups.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.