This Proficiency Plus classroom set supports the following NCTM curriculum standards for grades 5-6: Numbers and Operations, Algebra, Geometry, Measurement, Data Analysis and Probability, and Problem Solving. It integrates math into the curriculum areas of social studies, science and math. English/Language Arts features: leveled for readers in grades 5-6, all titles are chapter books, meets the criteria for the reading first initiative of the no child left behind act, math-directed subjects also teach and reinforce fundamental reading skills. (30 books).