In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

This science fair project investigates why the number of visible stars changes from place to place.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Want to boost math and science learning? Take a bug expedition and give your first grader practice observing and charting what they see.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Show your preschooler how to make a print of a butterfly using her hand as a tool--a great way to stimulate her sense of touch.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

Who knew that nature could get so crafty? Show your kindergartener how to collect and morph pinecones into a whole team of personalized pinecone people.

Introduce your child to science with something they see everyday--their shadow!

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.