Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsNumber Line Solutions to Absolute Value Equations and Inequalitieshttp://demonstrations.wolfram.com/NumberLineSolutionsToAbsoluteValueEquationsAndInequalities/]]>http://demonstrations.wolfram.com/NumberLineSolutionsToAbsoluteValueEquationsAndInequalities/Adding and Subtracting Positive and Negative Integershttp://demonstrations.wolfram.com/AddingAndSubtractingPositiveAndNegativeIntegers/]]>http://demonstrations.wolfram.com/AddingAndSubtractingPositiveAndNegativeIntegers/A Negative Times a Negative Is Positivehttp://demonstrations.wolfram.com/ANegativeTimesANegativeIsPositive/]]>http://demonstrations.wolfram.com/ANegativeTimesANegativeIsPositive/An Example of Subtraction of Negative Numbershttp://demonstrations.wolfram.com/AnExampleOfSubtractionOfNegativeNumbers/]]>http://demonstrations.wolfram.com/AnExampleOfSubtractionOfNegativeNumbers/Addition and Subtraction of Integershttp://demonstrations.wolfram.com/AdditionAndSubtractionOfIntegers/]]>http://demonstrations.wolfram.com/AdditionAndSubtractionOfIntegers/Subtraction Bingo with Negativeshttp://demonstrations.wolfram.com/SubtractionBingoWithNegatives/]]>http://demonstrations.wolfram.com/SubtractionBingoWithNegatives/