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This science fair project idea investigates whether rocks containing geodes can be determined from the outside.

Science fair project that determines the effect of concentrated mental effort on physical performance levels.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Engineers in training can get started with this simple wheel-and-axle construction activity.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Kids are sure to be entranced by the magic of the ocean when they create their very own ocean in a bottle.

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.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

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

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Wreath ornaments decorate your Christmas tree and act as a fun sensory craft for preschoolers. Make wreath ornaments with your child this holiday season.

This experiment explores whether caffeine improves athletic performance.

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.

Help your child hunt and capture bugs to observe to practice important science skills and satisfy her curiosity simultaneously!

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Help young learners discover why catÃs eyes glow in the dark with this simple experiment

Help your fifth grader embrace the roots--literally--of Mother's Day by growing carnations to honor mothers in you family's history.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.