Writing Algebraic Expressions
http://math.about.com/b/2011/10/24/writing-algebraic-expressions.htm?nl=1
Halloween Math
http://math.about.com/b/2011/10/21/spooktacular-math.htm?nl=1
Using Bar Graphs
http://math.about.com/b/2011/10/19/using-bar-graphs.htm?nl=1
Math Formulas and Tables
http://math.about.com/od/formulas/Math_Formulas_Math_Tables.htm
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