Write by Number is a mastery-based program that teaches K-12 students expository writing, from a single sentence all the way through eight-paragraph essays. This open-and-go writing program helps students master skills <including grammar, usage, and mechanics> a little at a time, with no big leaps. Assignments in the Student Book have objective standards, making assignments clear for students and grading simple for teachers. The Teacher Book guides you through each Stage, listing goals, objectives, and standards — making documentation easy. Write by Number is the simplest writing program you’ll ever use.