Before students learn the standard algorithm for addition and subtraction, they need a thorough understanding of what regrouping means. This resource is designed to help build that knowledge and move students toward using the traditional method. Includes: Addition mini book (8 pages)Subtraction mini book (11 pages)Addition worksheetSubtraction worksheetAnswer keysMINI BOOKSTwo "how-to" mini books walk students through example problems. Each step is clearly explained in both numbers and words. St