What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

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.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Study science with your first grader in this arts and crafts activity that models the reason why fall leaves change color with some paint and crayons.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Planning a beach vacation? Here's a cool nature craft you can make in the sand with your child.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Help your child celebrate the summer and the sun by making a sandy seascape.

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

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.

Satisfy your kindergartener's fascination of different sounds with this easy science project, where they'll use their ears instead of their eyes to identify sounds!

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

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

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

What happens when colored beams of light mix? You might be surprised.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

Help your preschooler craft a homemade wind spinning device--a surefire to make your backyard sparkle, and teach her a bit about weather!

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This science fair project idea investigates the difference in reaction times between boys and girls.