Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this design challenge, your child will create a parachute for a small toy using typical household items.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Have your child kick off their summer vacation by making a miniature water slide!

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

This science fair project idea creates cool new colorful fabric pattern designs and experiments with the mixing of colors.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

In this experiment, the weight of aluminum cans will be compared.

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

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

The project is to investigate yeast fermentation and its results on hand of latex balloons.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.