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

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

Help your kindergarten science maven explore the water cycle without getting everything wet.

This project examines whether people's taste perception is influenced by what they see.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

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

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

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

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 project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science project teaches students to classify different shapes of leaves.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.