Math exercise workbook for 4th graders, with a blue cover and a whale illustration. - Title: Exercise Workbook Math 4th Grade Part 1 (or "Upper") - Publisher: Yotsuya Otsuka - Contents: Math exercises - Target Grade: 4th grade - Cover Design: Blue, whale illustration Thank you for looking. As a bonus, there are pages from the Yosho Series Calculation book. Some pages have pencil markings, but most pages have very little writing.