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Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

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

In the mood for a bit of silly science? Help your child create a truly one-of-a-kind planter out of a potato head!

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

Help your little one figure out the differences between the worlds of air, land and water, a huge step in understanding how our environment works.

Take a nature walk in your backyard or local park to find one object for every letter of the alphabet. Then put them together in this handy nature book.

Recycling may be a confusing concept for your little one, so take the time to teach them the magic of compost - right in your own backyard!

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

Make an edible play dough with your child to help her develop her sensory and motor skills.

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.

How can you tell the difference between a spider and an insect? Your child will find out as he makes a tray of yummy creepy crawly snacks.

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Help your preschooler practice observing and experimenting with this exciting activity where they'll get to examine objects below the water's surface!

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.

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

Kids grow sunflower greens from seeds for a hands-on gardening experience in this kindergarten life science activity.

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

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.