Amazon.com description: Product Description: Over 25 percent of children today have some type of learning disability. The Tutor Books series is designed specifically to help those children who are having trouble learning the basic academic concepts. Number Recognition Workbook provides simple, effective activities to help youngsters recognize, write, and sequence each number. "Counting & Quantity Workbook" teaches children how to count from one through 20 using basic quantity identification exercises. Focused instruction takes youngsters' specialized needs into consideration, providing lots of practice, review, and repetition for each skill taught Clear, straightforward directions and examples help young learners understand and complete each exercise Removable full-color number line provides youngsters with a reference guide Each workbook is reviewed and endorsed by experts in the field of special education