Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Give your budding young observers a chance to discover simple machines at use in their own home.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Help your child learn about animal classification with this fun and delicious activity.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

This science fair project idea investigates whether air has mass and weight.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

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

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

In this project, the affect of acid rain is simulated by the acid, vinegar.

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

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.

This biodiversity project examines the biodiversity in your own backyard.

Start your toy engines -- this is going to be a fast and friction-filled race!

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Determine if gender affects the ability to identify different smells.

Examine the effect of pressure on carbonation in soda.

This science fair project idea explores the egg's thin membrane.

This science experiment has students test whether a snail moves faster on concrete or dirt.

This project tests the hypothesis that dark colors absorb more heat than light colors.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.