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This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

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

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

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

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

This project determines what category of person is most likely to be ticklish.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Is it a square or a circle? See if you can trick your friends with this zany science project!

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

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

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

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Learn whether writing things down really makes things easier to remember.