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

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

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.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Teach your child to dye eggs with natural ingredients from the grocery store. From pink to gold, these eggs are perfect for hiding, hunting or simply munching.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Make a bear cave for your child to play and explore, learning about bears and winter hibernation.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Teach your first grade scientist the difference between liquids and solids using maple syrup.