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In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

In this activity, create a poem that emerges from the collaboration of parent and teen in the activity of observing, discussing, reading, and writing.

How can Hooke's law explain how springs work? Learn about how Hooke's law is at work when you exert force on a spring in this cool science project.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Explore the neural and mental mechanisms at play in mental imagery.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Be active while learning about American history with this twist on the classic running game "Capture the Flag."

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

Look for correlation between pH values of commercial soaps and detergents and manufacturer claims about eye irritation hazards.

Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

Help your first grade scientist learn about metamorphosis by observing the life cycle of some interesting creepy crawlies.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Get a cool science project idea on a photovoltaic cell and explore the various factors that affect the energy output of the photovoltaic cell.

The project researches how lubricants affect the mechanical advantage of a pulley.