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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.

Race to double numbers in this competitive card game. Try one-digit or two-digit numbers, or more!

Learn to recognize symmetry by playing this game! The more you play, the better you'll get at recognizing this special characteristic many playing cards have.

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!

Figuring out fractions can be a challenge! But with this game your child will become more comfortable converting fractions after only a little practice.

Most timeline activities are all about history. Make timelines more relevant and personal for your child by focusing on the hours and minutes of his day.

Practice of math facts is usually limited to drill sheets and flashcards. But kids are more likely to tune in to math facts if practice is presented as a game!

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.

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

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.

Hone observational skills and introduce the basics of data interpretation with this data gathering activity all about the different colors people wear.

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

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

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

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.

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

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

This decimal game is a great way to help your child get familiar with how decimal values work.

Help cement the concept of place value with this simple activity that involves creating a set of dials made from Styrofoam cups.

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!

Liven up a lesson about graphing by helping your third grader compile a bar graph from his classmates' birthday data.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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!

Help your child apply his math skills the next time you cook a family meal similar to one you'd buy at a restaurant.

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!

Kids will get a kick out of shopping for discounted "kicks" with this creative math game that focuses on percentages.