Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

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

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

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.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

This science fair project idea produces sounds by creating vibrations using different objects.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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