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

Competitors go head-to-head only this time it's a race to figure out the lowest common multiple of two numbers; an important step to working with fractions!

Teach your fifth grader an important math concept with this quick and simple activity that shows them how to divide whole numbers by fractions.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

Toss playing cards into boxes while you practice addition and multiplication with decimals in this fun, fifth grade math game.

In this activity, your child will get a review of addition, subtraction, multiplication and division using classic domino pieces.

Check out this dice game perfect for teaching your savvy kid the fundamentals of probability.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

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 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!

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

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

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

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

When you're studying the Mayflower, numbers can be an important part of the history...and a great chance to practice elementary math!

Simplify fractions with your child in this fast-paced math card game.

Here's a hands-on way to help your child understand how common fractions can be equivalent.

Here's an interactive, fast-paced game that will make your fifth grader feel more comfortable with simple equations.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Practice math and social studies skills with this fun game based on the Battle of Lexington and Concord.

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.

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

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?

One way to "trick" your child into getting extra practice with one-step equations is to play a variation of the classic game, tic tac toe.

Have your child observe, measure and record the amount of space objects occupy, and you'll have an inside space explorer on your hands in no time!

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

Want to ensure that your child's math knowledge stays sharp? This mean, median, and mode game is the perfect way to reinforce these essential math concepts.

Use this great no-bake recipe to save energy and keep cool.