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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Master addition, subtraction, multiplication, and division through practice in this fun math game designed for fourth grade!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Add negative and positive numbers in this fun math card game for fourth graders!

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

In this fun experiment, we'll find out how color affects heat absorption!

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

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

To practice place value, here's a fun hands-on activity to get your child flipping through place value with ease!

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Here's a fun, geometric puzzle activity that will capture your child's interest and strengthen his number awareness and graphing skills.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

Demonstrate how to tell the age of an egg without having to crack it open.

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

Learning to identify prime numbers can be tricky. But this fun card game can make memorizing some basic prime numbers a breeze.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This science fair project idea explores whether white light can be separated into different colors.

Discover how and which salt melts ice the quickest.

This fun calculator exercise will take the mystery away from the machine, and familiarize your child with the functions of a calculator.

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

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Create a fun hands-on game to practice long division, using magnetic numbers on a fridge.

Sure, angles can be confusing. Here's a fun activity to brush up your child's knowledge of these geometry essentials.

This is a simple, fast game that you and your child can make together to help him master rounding with decimals.

Use a deck of playing cards to practice place value and other math concepts with your upper elementary child!

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Help your kids map the "global footprint" of your family's grocery cart by investigating how far your food travels before landing on your dinner table.