Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Science fair project that creates fog using bottles of hot and cold water.

What kind of fabric holds dye best? How can you improve a dyed fabric's colorfastness? In this colorful project, test colorfastness using mordants and bleach.

Clouds are formed when warm and cold air meet. Here's a way for kids to see it all up close!

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Inspire your child to learn about an amazing animal as she creates her very own polar bear habitat.

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.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Here's an arts and crafts activity for preschoolers and pre-kindergarteners: build brick buildings with homemade mud bricks made from dirt and water.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

This experiment will explore whether adding different substances to a gel affects its strength.

This activity allows your kindergartener to translate what they observe into a beautiful poem.

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

How can you tell the difference between a spider and an insect? Your child will find out as he makes a tray of yummy creepy crawly snacks.

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.