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Make a backbone model to explore human anatomy and life science.

This science fair project idea explores whether color affects a person's emotional state.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

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.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

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

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

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

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

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

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

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.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

This science fair project explores how osmotic pressure forces water through the root up into the plant.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

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.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Learn whether writing things down really makes things easier to remember.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.