The Teacher’s Edition contains 160 lessons divided into 22 chapters. The colorful Student Worktext pages with answer overprint are included for each lesson. Each chapter is preceded by a Chapter Overview, which explains the chapter theme and contains notes about materials that need to be gathered and prepared for the lessons. A bulletin board is pictured and explained. Some chapters include A Little Extra Help section which provides ideas for helping the student who is experiencing difficulty with the concepts taught in the chapter. Each chapter concludes with a Chapter Review and a Cumulative Review lesson.