Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

In this math and science activity, help your middleschooler learn about proportion and measurement with just her shadow and a tape measure!

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

Want to get your bookworm interested in science? Check out this cool activity that teaches kids how to write science fiction!

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

Can't make it to the beach? Bring the science of ocean waves home with this fun earth science-related craft.

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.

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.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!