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In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

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

In this experiment, you will be making your own paper flashlight by conducting electricty with graphite.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Read on this high school science fair project idea to get basic information on the process of heat transfer and the conditions under which the transfer occurs.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

High school kids learn about fruit fly ethology in this cool lab that determines fruit fly movement and behavior under different conditions. Check it out.

Science fair project that determines how we can change potential energy into kinetic energy.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

Science fair project that demonstrates that rotting food attracts insects that lay eggs on it.

This science fair project idea discovers the average time it takes for a person to remember something completely.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

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.

Compare the ignition rates of various types of flame-retardant materials.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Science fair project which identifies the most effective insulator that you could use to make a winter coat by comparing how well cloth and cotton trap heat.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

Make these homemade shell fossils and introduce your child to the wonders of science!

This experiment demonstrates the conservation and transfer of energy using a marble rolling over sandpaper.

This science fair project idea investigates the relationship between memory and age.

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.