Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

What colors can dogs see? Do they only have black and white vision, or can they see other colors too? Find out in this cool science experiment!

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Help your middle schooler improve his observation skills by playing this simple observation and spatial memorization game.

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

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 interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

The goal of this science fair project is to demonstrate the effects of oxidation by writing a message in invisible ink made from lemon juice.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Research and understand basic computer science. Build a simple computer, following instructions found online. Design a new or improved feature.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Do different types of oil mix or stack? Find out in this science fair project idea!

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Future whistleblowers can learn about product safety standards with this exercise in writing and researching.

Science fair project that determines what percentage of air is made up of oxygen by examining the chemical reaction between oxygen and rust.

Combine science with reading and art to help your first grader create an attractive holiday gift for a beloved friend or relative.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Learn about the growing app design field by designing a new or improved app for smartphones.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.