Any way you slice it fractions are foundationalMany students struggle with fractions and must understand them before learning higher-level math. Veteran educator David B. Spangler describes powerful diagnostic methods for error analysis that pinpoint specific student misconceptions and supplies specific intervention strategies and activities for each error pattern. Aligned with NCTM and Common Core State Standards the research-based targeted interventions for each error pattern promoted teaching for conceptual understanding. Practical materials include:Reproducibles for diagnostic testsPractice pages for exercises keyed to the diagnostic tests and error patternsTeacher resources for hands-on activities game sheets and pieces and more