Horse chestnuts are inedible, but British children found a fun use for them around the 1840s by turning them into a game called Conkers.

Here's a hands-on activity that helps your child understand the concept of "circumference."

Do different types of oil mix or stack? Find out in this science fair project idea!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Put old, worn-out picture books to work by constructing a book birdhouse, perfect for welcoming spring.

Recycle paper and old magazines with this art project that creates a great tool for artists: a color wheel!

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

Your child can make a sweet and savory spinach strawberry salad; two ingredients that come together for a light and fresh summer dish!

Create a dramatic, elegant line drawing of a pumpkin in this white-on-black Halloween art project. 

Learn about the beautiful Indian art of Madhubani painting with this fun and creative project.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Cool down this summer and stay active, too, with a wet clothes relay! 

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

Encourage your child to begin scrapbooking or journaling with a personalized book covered in Washi tape that he'll want to use all the time!

Spider cupcakes are creepy-crawly treats that are perfect for Halloween. These spider cupcakes make for a great Halloween party treat.

In celebration of Earth Day, help your fifth grader write a poem from the Earth to its inhabitants.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Let your fifth grader craft a gleaming green shamrock pin for himself or a friend this St. Patrick's Day!

Instead of giving friends and family a store bought fruitcake you can make your own this year with your favorite ingredients!

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.