All math books purchased from the proper textbook companies include a teacher’s edition that provides the answers to all lessons and exercises in the student’s edition. Any other ancillary materials also include answer booklets and/or teacher’s editions.
Many textbook companies offer online versions of their textbooks for registered users to locate information that is initially provided when the textbooks are first adopted. Depending on the publisher, most teachers can register online or contact that company for replacement or additional teacher’s editions if needed. Teacher’s editions often include lesson outlines, lesson plans and pacing guides, and are also useful for students taking correspondence or distance-learning courses.