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Tin can phones offer something modern versions don't—a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Science fair project which helps you determine your latitude by using an astrolabe, which measures the angle between the North Star and the horizon.

Build an electroscope, a simple device that measures static electricity, or the freely flowing electrical charges of the atmosphere!

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

This science fair project idea demonstrates how our fingers prune when in water.

Learn about what happens to a current-carrying wire in a magnetic field in this cool electromagnetism experiment!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

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.

This science fair project idea produces varying pitches of sound.

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

Help your middle schooler improve his observation skills by playing this simple observation and spatial memorization game.

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

Help your child measure breezy weather in her environment by making a wind vane for kids, a simple version of the classic scientific measurement tool.

Science fair project that tests the effects of diluted soap on the size of bubbles blown from the solution. Will dilution cause smaller bubbles?

Science fair project in which you will start a fire from scratch without using matches or a lighter.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

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

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.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

Help your child hunt and capture bugs to observe to practice important science skills and satisfy her curiosity simultaneously!

Bring the fun of gardening indoors! By stuffing a simple pair of pantyhose with a few grass seeds on top, your child can grow her very own plant pet.