Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

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

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

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

This project examines various algorithms to determine the ideal algorithm for a strategy game.

This experiment will examine and precisely measure the amount of sugar in various sodas.

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.

This science fair project evaluates if and how eating a large meal affects ability to perform mental tasks.

This science fair project idea produces sounds by creating vibrations using different objects.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Discover whether ants are more attracted to natural cane sugar or artificial sweeteners.

Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.

The objective of this sociologically-inclined experiment is to evaluate whether kids' toy preferences are hardwired or develop as they grow.

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

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This project explores whether music affects the growth and health of plants.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

This experiment will evaluate if chewing gum affects students' test performance.

In this science fair project, high school students will try to determine the mathematical patterns in JS Bach's two movement preludes and fugues.

This science fair project idea explores how water and ice can change the form of rocks.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This science project investigates the influence of different genres of movies on appetite.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

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

The objective of this experiment is to evaluate the effects of acid rain on plants.

Check out this cool science fair project idea to explore short and long term memory and whether there is gender differences in memory.

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

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.