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

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

For a fun family activity to introduce your child to genetics, have your child go on a search for dominant and recessive family genes!

In this design challenge, your child will create a parachute for a small toy using typical household items.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

This basketball project explores the best way to make the perfect shot every time.

Have your child kick off their summer vacation by making a miniature water slide!

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Learn with makes water molecules work with this fun and easy science activity!

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

Engineers in training can get started with this simple wheel-and-axle construction activity.

Use dirt and different colors of craft sand to make unique layers in a clear plastic cup to represent the layers of the Earth.

This adventurous art project will send kids on a scavenger hunt for fall materials they can use in their artwork. This craft also teaches kids about seasons.

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

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.