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This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Create uphill flow of water by using a siphon. Create vacuum by suctioning one end of tube, and submerge it under water. Watch the direction the water travels.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Get a fun high school physics science fair project idea one of the states of matter called plasma and the applications of this unique coil.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

Would you be able to tell the difference between colored contacts and natural eyes from a normal distance? Find out in this science fair project!

Design and build a scale model representing living tree architecture. Then build a full-size version using one or more lives trees, and test your creation.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

This science fair project idea determines the probability of a coin landing heads or tails.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Discover which fabrics shrink the most in the wash and why.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

The objective of this science project is to determine whether a sweet tooth is most likely an inherited trait or a learned behavior.

Discover the interactions of synthetic dyes and natural dyes on natural and artificially-made fabrics.

Explore the belief in astrology as a predictive system.

This science fair project idea investigates how color affects temperature.

Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.

Science fair project that demonstrate how abrasions are formed on rocks in nature and the variations between types of rocks.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

This experiment will use computers to examine how the famous Mandelbrot set can be manipulated in fractals.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.