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This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

An home science experiment for older students that teaches about the science behind heat.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

This science fair project idea explores the different properties & interactions of sugar molecules.

Construct and experiment with a periscope using reflected light rays to gather an image.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Try this chemistry experiment with your curious kid and get some "shocking" results!

This science fair project idea provides evidence that air is everywhere and takes up space.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

This science fair project examines how seeds hitchhike on animals and clothing.

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

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

The goal of this project is to create an exciting topographical map out of dough.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea produces sounds by creating vibrations using different objects.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.