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

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

Make sourdough bread...and learn some colonial history and modern science in the process!

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Help your first grader design and create his very own bird feeder out of an empty milk carton.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

You and your child can create this beautiful butterfly mobile for hanging anywhere in the home (and learn about this magical creature while you're at it).

This science fair project idea examines whether boys and girls differ in reflexes.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

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

Take a dive into the candy jar with this yummy science experiment.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Your kindergartener will make prints of his favorite fruits and vegetables and learn how to organize and assemble his very own book.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This is a fun and inexpensive project and it's a great way for your child to build basic geometry skills, like shape recognition and pattern/angle familiarity.

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

Use the textures found in nature to create your own stationery! This fun, outdoor activity will no doubt inspire your child's creative side.

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

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

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.

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.

This fall, make a leaf crown that will encourage creative play and your child's interest in the natural world while you help them build fine motor skills.