I recommend checking the following three links, namely <a href="http://www.homeschoolmath.net/download/Add_Subtract_Integers_Fact_Sheet.pdf,">http://www.homeschoolmath.net/download/Add_Subtract_Integers_Fact_Sheet.pdf,</a> http://www.homeschoolmath.net/download/Multiply_Divide_Integers_Fact_Sheet.pdf, and <a href="http://amby.com/educate/math/integer.html#mult-div.">http://amby.com/educate/math/integer.html#mult-div.</a> These sites might serve as good initial resources to concretize math, i.e. help our learners negotatiate meaning in it.