How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

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

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

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

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Learn all about balance and motion as your child designs a corn maze!

In this project children practice the scientific method while playing with puffy paint.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Help your child make a beautiful homemade sandcastle that will last!

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

This activity is a great way to teach kids that, to find examples of science in action, they donât need to look any further than their own backyard.

Inspire your child to learn about an amazing animal as she creates her very own polar bear habitat.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.