MathKnack! 1-1000 Number was created to continue the practice established through "My Number Book 0-20," and MathKnack "1-100 Number Book". This book helps and encourages students to write their numbers up to 1000, while paying attention to number patterns (2's, 5's, 10's). The book gives many clues in the beginning, with fewer clues being presented as the numbers get closer to 1000. In use since 1998, I have found it to be a fantastic tool for helping students transition to the higher place-value numbers. In addition, the layout which helps the students successfully write their numbers, also makes it simple and quick to grade and check for understanding (201 is not 2001). It is also a wonderful resource for Special Education. I have found this book to be extremely helpful, and I know you will too!