Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

This science fair project idea demonstrates how our fingers prune when in water.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.

This Where the Wild Things Are costume will make your little wild thing look just like Max. This Where the Wild Things Are costume is surprisingly easy to make.

Which public places harbor the most bacteria and germs? Test different environments to find out where the most bacteria live in this science project.

Little hands and feet can be a big help when learning how to measure! In this activity your preschooler will practice using a ruler and writing numbers.

Make a poster with your child about what she wants to be when she grows up, while helping her practice her writing, researching, and artistic skills.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Race to double numbers in this competitive card game. Try one-digit or two-digit numbers, or more!

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

Learn how to make a menorah with this simple Hanukkah craft. See how to make a menorah for the Festival of Lights.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Learn how to make fairy wings with these easy instructions. See how to make fairy wings for Halloween or dress-up time.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Learn how to make a cape for your little superhero, vampire, or Elvis impersonator. See how to make a cape with this simple tutorial.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea investigates how different disinfectants work in killing germs.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.