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In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

This science fair project idea identifies trees using a dichotomous key.

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

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Construct and experiment with a periscope using reflected light rays to gather an image.

In this project students experiment with making music using only glasses of water.

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

This science fair project idea determines what household items are good conductors of electricity.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

This science fair project idea determines what household items are good conductors of electricity.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.