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This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

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.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

The goal of this project is to create an exciting topographical map out of dough.

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

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

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

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

Examine the effect of pressure on carbonation in soda.

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

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

This science fair project idea explores whether cats can be trained in the same way that dogs can.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Discover which fabrics shrink the most in the wash and why.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.