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What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

Science fair project that determines whether disinfectant sprays or disinfectant soaps are more effective at removing bacteria from hands.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This science fair project idea explores whether a person's ability to see under very dim lighting conditions diminishes with age.

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

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

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

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

In this experiment two environments will be compared: a room with interior design that uses correct Feng Shui versus one with incorrect Feng Shui.

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

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

This science fair experiment organizes made-up elements to simulate Mendeleev when he made the periodic table of elements.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

This science fair project idea investigates food preference of birds.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Do you think heat can affect a plant's growth rate?

Learn how different types of soil affect how animal tracks form in this experiment!

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

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

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.

This science fair project idea determines whether volunteers remember more information presented orally or visually or kinesthetically.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project idea explores whether the types and brands of faucet filters are relevant to their performance.