The Dimensions Math 1A & 1B Home Instructor’s Guide & 1A Textbook is a comprehensive educational resource for homeschooling students focusing on mathematics. Published in 2020 by Singapore Math, Inc., this ring/wire bound and paperback book set includes both the instructor’s guide and student textbook. Written in English by author Jenny Kempe, this resource covers essential math concepts in a clear and structured manner, making it a valuable tool for students and educators alike. *** Dimensions Math 1A & 1B Home Instructor’s Guide & 1A Textbook are a set of three (3) books. They are like new and have no writing or highlighting in them.