This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

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 science fair project idea compares biodiversity between drops of water.

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Construct and experiment with a periscope using reflected light rays to gather an image.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

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

Test your friends to find out if you can replicate the placebo effect's incredible results.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.