Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Kindergarten algebra is a lot different than high school. In kindergarten math, algebra means grouping like things, or noticing what doesn't belong in a set.

This project compares the strength of one, two, and three-ply toilet paper.

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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!

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

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

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

In this project, waves of vibrations are experimented with using water in glasses.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

This science fair project idea produces varying pitches of sound.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

The purpose of this science fair project is to build a basic radio.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

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

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

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this project, a basketball containing different psi is dropped to see how well it bounces.