A comprehensive teacher guide to implementing numeracy Problem Strings in second grade. This book will help you: empower students to reason mathematically; know and use the major models and strategies for second grade students; model student thinking to make it visible, discussable, and take-up-able; guide your students to more confidence, flexibility, and success; and develop student thinking to know that math truly is FigureOutAble.This book is one of six, although it is not a series in the sense that you will read each one successively. The six books are one for each grade, Kindergarten through fifth grade.