What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Test your friends to find out if you can replicate the placebo effect's incredible results.

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.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This project determines what category of person is most likely to be ticklish.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Is it a square or a circle? See if you can trick your friends with this zany science project!

This science fair project idea investigates how magnetism can defy the force of gravity.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

This science fair project idea demonstrates that plants give off water.

This science fair project teaches students the differences between fruits and vegetables.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

In this project children practice the scientific method while playing with puffy paint.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Test whether plants can grow without sunlight and water.

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

This science fair project idea investigates whether air has mass and weight.

This science fair project idea investigates if fats add to the flavor of food.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

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