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Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Determine the effect of homework on academic performance. Collect grade info at the end of a semester, determine correlation between grades, amount of homework

Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

Science fair project which helps you determine your latitude by using an astrolabe, which measures the angle between the North Star and the horizon.

Show your teens the connection between making history and writing it by having them write, illustrate, and edit a newspaper from the past.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

Use a fish tank to simulate a pond! This science fair project explores the relationship between acid rain and the dissolved oxygen concentration of water.

This project makes learning the difference between warm and cool colors easy and fun. And it's a great intro to complimentary colors - great for pop art!

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

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

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Take a trip to the pet store and then make a scrapbook to help your kindergartener learn the difference between living and non living things!

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

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

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.

Help your little one figure out the differences between the worlds of air, land and water, a huge step in understanding how our environment works.

Draw letter people with your child to help her take a closer look at the letters, and see the differences between them.

How can you tell the difference between a spider and an insect? Your child will find out as he makes a tray of yummy creepy crawly snacks.

In this activity, your child will explore the difference between boredom and curiosity in building greater attentiveness and happiness in the present moment.

With school, home, and activities in between, life can sometimes feel chaotic to kids. Help your child learn how to stop and relax with handmade peace rocks.

Check out this cool middle school science fair project idea to find the difference between organically grown and commercial brands of foods.

Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?

How is NASA able to launch something into orbit around the Earth? Learn about the relationship between gravity, speed, and orbit in space in this cool project!

Check out this cool science fair project idea to explore the relation between onions and eyes and how to prevent eyes from tearing while cutting an onion.