Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

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.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Learn all about balance and motion as your child designs a corn maze!

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

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

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

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

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

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

Take a dive into the candy jar with this yummy science experiment.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project idea determines the most effective method of preserving food.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

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

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

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.