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

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

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

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.

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

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

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

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

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.

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.

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

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

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

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

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

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

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

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

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

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

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

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

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 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.

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.

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

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