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Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

This science fair project idea examines various dead zones and investigates the cause and how it can be fixed.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

Check out this fun science fair project idea to explore fun facts about fruit juices and learn why do juices turn bad in the fridge.

This simple experiment serves as an introduction to the greenhouse effect.

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

How do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

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

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Here's a simple craft activity that can help your youngster better visualize the life cycle of a frog as a circle.

This science fair project idea explores how far the average human can see.

Does "short circuit" mean that electricity takes a short course? This science experiment provides steps to help you get to the bottom of this science mystery.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

In this experiment a spectrometer is used to analyze the light emitted by burning ion solutions.

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

This project examines various algorithms to determine the ideal algorithm for a strategy game.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Have your child make a special mobile inspired by the weather outside. Learn about seasons, the environment, and art in 3D.

Learn the anatomical and physiological differences between central and peripheral visual systems.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

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

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Try this simple activity with your middle schooler to help him develop an understanding of why scientific classification systems exist and how they work.