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Concept Development Unit Summaries  Secondary School Topic AreasThe following PDF files provide a brief overview of each of the specific Concept Development Unit (CDU) which are available on this web site. The summary provides the year the CDU was produced, the title and a one paragraph description of the unit. The specific CDU may be then located by clicking on the appropriate topic in the above section  "PreAlgebra", "Algebra/Graphing/Statistics", etc.  and looking up the CDU by its title and/or year produced. CDU Summaries: 

Date Posted: Jan 15, 2009  Last Modified: May 23, 2012  Last Reviewed: May 23, 2012 