How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Decorate your porch or backyard with this unique fall craft!

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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

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.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Help cement the concept of place value with this simple activity that involves creating a set of dials made from Styrofoam cups.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Here's an Easter themed math game to reinforce your child's logical reasoning and place value skills.

Using a toy race car kids create a visual model of the Doppler Effect.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Here's a pressed leaf card project that puts science and writing together for your second grader.

Here's a science activity to help your child investigate how seeds are designed to travel.

Make a reusable picnic pouch with your child this summer to celebrate the Fourth of July in an eco-friendly way.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Play hopscotch with numbers, but also with letters, to get kids ready for reading.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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

Here's an activity to help your child create her very own time capsule to unearth and open in one, five, or even ten years later!

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

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.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

This holiday season, don't forget the many delights of "cookie science"! Here's a confection we especially like.