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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.

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

This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.

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.

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.

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.

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

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

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

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

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

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.

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

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

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!

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Aquariums are usually reserved for fish, but this aquarium will contain creatures from your child's imagination!

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

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

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.

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!

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.

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.

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

Here's a science activity to help your child investigate how seeds are designed to travel.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

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

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

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