Many students struggle with fractions and must understand them before learning higher-level math. Veteran educator David B. Spangler provides research-based tools that are aligned with NCTM and Common Core State Standards. He outlines powerful diagnostic methods for analyzing student work and providing timely, specific, and meaningful interventions within an RTI framework. The strategies are easily tailored to each student's individual needs, decrease the probability of repeated errors, and result in improved student performance. Practical materials include: (1) Reproducibles for diagnostic tests; (2) Practice pages for exercises keyed to the diagnostic tests and error patterns; (3) Pages for practicing alternative algorithms and estimation; (4) Teacher resources for hands-on activities, game sheets and pieces, and more; and (5) Worksheets, answer keys, and online resources. Each main unit, along with the sections on academic research and "Big Ideas," concludes with a set of teacher reflection questions for use in a professional development setting. Get ready, get set, and help your students tackle fractions with confidence! Following a preface, the book is divided into the following units: (1) Fraction Concepts; (2) Addition/Subtraction of Fractions and Mixed Numbers; and (3) Multiplication/Division of Fractions and Mixed Numbers. Also included are additional resources, and technology resources online.