Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

What does yeast eat? Sugar, of course. But yeast also has some powerful enemies in the form of antifungal agents! Kids test them out in this fun yeast lab.

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

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

This science fair project teaches students the differences between fruits and vegetables.

Make a lei and bring a touch of the tropical lifestyle into your home!

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Your child will create an adorable Christmas tree from their footprint and practice counting while decorating their tree with objects of a variety of textures.

This science fair project idea determines whether the older population prefers darker, duller colors rather than bright and lush colors.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.

This project explores differences in people's reactions to images in color and images in black and white.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

Can you win a staring contest? Would your performance be influenced by your eyesight? Find out in this science fair project idea!

This science fair project idea produces sounds by creating vibrations using different objects.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

This experiment explores the trend of reactivity in the alkaline earth metals as you go down the second column of the periodic table of elements.

Design a livable building that functions without electricity. Consider necessities, comforts and entertainment. Build a scale model of your design.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

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

Discover which battery composition (type) lasts the longest.

Design an improvement for an existing website. Program improved feature, get website owner to implemement new design.

Examine the effect of pressure on carbonation in soda.

Looking for a fun way to encourage imaginative play? Try crafting these animal dice with your preschooler.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.