This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project idea investigates how magnetism can defy the force of gravity.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project idea explores the different properties of matter.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

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.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Invite your kindergarten marine biologist to practice in scientific identification and categorization while creating a lovely treasure box.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Your kindergartener will make prints of his favorite fruits and vegetables and learn how to organize and assemble his very own book.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Planning a beach vacation? Here's a cool nature craft you can make in the sand with your child.