This workbook is the NEW VERSION ISBN: 9780941995399. Contents of New version are IDENTICAL to old version; only difference is in the binding. New version is Perfect-Bound for strength and durability (Glued in pages), not comb-bound like old version. This 90 page Workbook is designed to assist in teaching the Addition and Subtraction lessons in the textbook: How To Tutor, Sam Blumenfeld's great book that tells you how to teach the three R's. Practice for ALL the addition and subtraction exercises in How To Tutor are available in this workbook format. There are three pages for EACH lesson. You no longer have to write out the exercises by hand. One page explains the lesson to the student, the second page is for the teacher and student to work on together - the teacher prompting the student with suggestions, the third page is for the student alone. The How To Tutor Arithmetic Workbook for addition and subtraction includes timed tests for great practice work. Each book is bound with tough, durable glue to make sure it stays together, even for more than one student to use. The pages are 8-1/2 X 11 size. Type and figures are extra large for easy reading even for the little ones. The HTT Arithmetic Workbooks were compiled to make your work a little easier. Answers are included for all problems in the Workbook. Space is left on many pages for the teacher to make up his/her own extra practice problems. For ease of use the workbook page numbers coincide with the actual pages in the HTT book. The HTT Addition and Subtraction Workbook does NOT contain the specific lesson-by-lesson instructions found in the HTT book itself, so it will be necessary to use the HTT Practice Workbook along with the HTT text book. The How To Tutor instruction textbook itself is available on Amazon.com by using this ISBN: 9780941995290. There is a second HTT Workbook devoted to assisting the teacher with the Multiplication, Division, and Fractions lessons found in the HTT textbook. It is available on Amazon.com by using this ISBN: 9780941995405. The How To Tutor text book, of course, covers all THREE of the R's: Reading, Writing and Arithmetic- (Through approximately through 6th or 7th grade). If you decide to teach someone the Three R's with How To Tutor, you will find several other resources that can be very helpful to you: To accompany the Reading Section of How To Tutor Amazon.com has 1.) The Alpha-Phonics and How to Tutor Phonics Companion Workbook (ISBN: 9780941995337), 2.) The Alpha-Phonics and How To Tutor Little Companion Readers (ISBN: 9780941995344), and .)Amazon.com has to accompany the Cursive Handwriting section of How To tutor: the How To tutor Cursive Writing Practice Book (ISBN: 9780941995382 For much more information on all these optional workbooks available to help you with teaching the Three R's with the How To Tutor textbook please enter their ISBN on Amazon.com to quickly get there.