Package (in clear plastic wrap) of twelve paperback GLENCOE McGRAW-HILL Algebra 1 Chapter Resource Masters books. These books contain Chapter Resources, Leveled Lesson Resources (Study Guide and Intervention, Skills Practice, Word Problem Practice, etc), Technology Resources, Assessment Resources (Practice Answer Sheet for Standardized Test Practice, 4 Quizzes, Mid-Chapter Test, Vocabulary Test, Leveled Chapter Tests, Extended Response Test, etc), and an Answer Section at the end of each book. The ISBN number for these books are: Chapter 1 (ISBN# 0-07-890495-1), Chapter 2 (ISBN# 0-07-890496-X), Chapter 3 (ISBN# 0-07-890497-8), Chapter 4 (ISBN# 0-07-890498-6), Chapter 5 (ISBN# 0-07-890499-4), Chapter 6 (ISBN# 0-07-890500-1), Chapter 7 (ISBN# 0-07-890501-X), Chapter 8 (ISBN# 0-07-890502-8), Chapter 9 (ISBN# 0-07-890503-6), Chapter 10 (ISBN# 0-07-890504-4), Chapter 11 (ISBN# 0-07-890505-2), and Chapter 12 (ISBN# 0-07-890506-0).