This science fair project idea experiments with spinning color wheels and optical illusions.

After completing this fun science project, your child will have a better understanding of plants, and they may even develop a green thumb in the process!

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

In this activity, find out who the flowers' "partners in crime" are by being a flower spy!

Make scented sensory cloud dough. Add it to a sensory table, activity station, or put it in a baggie for extra at-the-park entertainment!

Help your kindergartener identify and sort eight different kinds of common seeds on this "seed wheel" plate you can use all growing season.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

Hatch a praying mantis egg case in a homemade habitat with your child's help! This is an amazing experiment in science and nature for kids of any age.

Your child can explore the wonders of science, and the concept of dehydration, along with creating a healthy and tasty treat!

Help your young learner discover why the insects that a spider eats stick to its web but the spider doesn't.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Invite your kindergarten marine biologist to practice in scientific identification and categorization while creating a lovely treasure box.

Build a bird feeder science craft that brings birds to your yard, and a smile to the whole family's face.

Help your kindergarten scientist predict and observe as she explores the science of smell...and have a great time doing it, too.

In this fun activity, frozen cubes of paint provide your preschooler with a cool new way to paint a masterpiece.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Using a glass fishbowl, you and your kids can create a low-humidity, open-topped terrarium perfect for easy care, drought-tolerant succulents.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

In this physics project, you'll learn how to find the maximum height of a projectile using some math and trigonometry.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

Wreath ornaments decorate your Christmas tree and act as a fun sensory craft for preschoolers. Make wreath ornaments with your child this holiday season.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.