Bridges the gap between computation and mathematical reasoning for higher grades and top test scores. Description & Features This 320 page book teaches the mathematical concepts and skills students are expected to know in second grade. It also introduces several skills and concepts normally taught in third grade. Mathematical Reasoning helps your child devise strategies to solve a wide variety of math problems. These books emphasize problem solving and computation to build the math reasoning skills necessary for success in higher level math and math assessments. All books are written to the standards of the National Council of Teachers of Mathematics. Core or Supplemental. These highly effective activities take students far beyond drill-and-practice by using step-by-step, discussion-based problem solving to develop a conceptual bridge between computation and the reasoning required for upper-level math. Activities and units spiral slowly, allowing students to become comfortable with concepts but also challenging them to continue building their math skills.