This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Measure the effectiveness of detergent containing a UV-absorbing compound in blocking UV-A radiation. Use black light and UV detecting beads.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Do you think heat can affect a plant's growth rate?

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

How can Hooke's law explain how springs work? Learn about how Hooke's law is at work when you exert force on a spring in this cool science project.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

Do thick liquids flow faster than thin liquids? Examine water and syrup's viscosity and inertia to learn about the Reynolds Number, laminar and turbulent flow.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

Explore the neural and mental mechanisms at play in mental imagery.

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.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

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

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This science fair project idea measures physical dexterity as a function of temperature.

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.