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Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Science fair project that studies how the brain transforms man-made symbols into meaningful concepts.

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

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

Can cells be frozen? This science fair project provides information to answer this question.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Science fair project that determines whether moths are attracted to one color of light more than others.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

This kindergarten science activity will help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

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

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

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.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).