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

Make subtraction practice more fun with this outdoor review game that's great for beginning math learners and more advanced!

This project tests the hypothesis that dark colors absorb more heat than light colors.

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!

Make practicing addition facts more fun and teach your child the helpful strategy of adding quickly to 10 in this fun and easy-to-make card game!

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.

Practice subtraction with your second grader in this fun dice game. Math concepts have never been more fun!

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.

Make practicing addition facts more fun and teach your child some helpful strategies with this spin off of the traditional "Go Fish" game.

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!

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.

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.

In this fun math activity, second graders will learn to estimate items in a jar! 

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

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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.

Based on the popular "I Spy" game, this activity lets your kid practice important skills like number identification and place value.

Playing the Number Sentence Game with your child gives him the opportunity to practice ordering and comparing numbers using symbols.

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

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