This science fair project idea produces varying pitches of sound.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

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!

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

This science fair project teaches students about wilting and browning of salad greens.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Construct and experiment with a periscope using reflected light rays to gather an image.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Learn about this simple machine and make a pulley of your own to use for fun science trials.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Start your toy engines -- this is going to be a fast and friction-filled race!