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

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

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

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Here's an enjoyable at-home activity that gives your child step-by-step practice identifying the important parts of an article and organizing his ideas.

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

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

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

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!

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Does your fifth grader need a study buddy for geometry? Forget about a tutor. Help him make his own geometry dictionary!

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.

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

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

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

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

Making metric conversions is a difficult concept to master. Get in some extra practice by playing this Tic-Tac-Toe game with your learner.

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

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

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

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Make math fun and easy with this activity that challenges your child to use their addition and multiplication skills to win a race!

Turn any sunny summer day into a fun and special occasion by having a watermelon seed spitting contest!

Explore the math concept of probability with your fifth grader on "lucky" St. Patrick's day this year!

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

Increase your child's confidence in interpreting bar graphs and throw a little candy into the mix to sweeten the learning process.

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!

Try a new approach to working with variables and equations by playing this tic-tac-toe game with your math student.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

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.