In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

This science fair project idea discovers the principle of conservation of mass.

Get a better understanding of water content by dehydrating carrots.

This science fair project will help students learn about non-vascular plants, such as mosses.

Determine whether the relationship between a personâs armspan and height are genetic.

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

This science fair project investigates how temperature of a room affects the burn rate of a candle.

Demonstrate which cooking method gets rid of the most fat.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

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

The project investigates which soft drink is worse for your teeth by observing the affect of soft drink on limestone.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

This science fair project idea explores whether dry ice will cool a beverage faster than wet ice.

The objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Science fair project that determines whether mass and weight are the same or different.

Check out this fun science fair project idea to explore fun facts about fruit juices and learn why do juices turn bad in the fridge.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

The project determines which type of birds prefer which type of birdseed.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!