Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

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

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?

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

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

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

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.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

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!

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

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

How powerful is the reaction between baking soda and vinegar? Find out here!

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

Here's a place mat your second grader can create, based on the classic frontier tradition of patchwork quilting.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Is your third grader bombing around on a bike these days? Here's a way to put all that fun time together with some math learning, too.

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.

Prepare for some scary Halloween counting practice! This game encourages players to knock down cylinders and then add to determine their scores.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

This pumpkin dessert recipe tastes like pie but looks like a no-bake cookie.

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