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This experiment examines whether storing your orange juice at different temperatures affects its acidity.

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

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.

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

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

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

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.

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

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

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!

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Do you think heat can affect a plant's growth rate?

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

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.

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

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Use familiar household items and decorations to turn estimation into a fun game!

Use playing cards to learn about temperature as well as positive and negative integers in this fourth grade math game.

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.

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.

Get estimating with this spooky activity that asks your young mathematician to rely on their problem-solving skills to figure out how many items they believe are in spooky Halloween jars!