Exercise problem collection including challenge problems and answer explanations. - Title: Exercise Problem Collection Social Studies Year 4 Volume 1 - Title: Exercise Problem Collection Social Studies Year 4 Volume 2 - Publisher: Yotsuya Otsuka - Contents: Includes challenge problems and answer explanations - Design: Cover featuring an elephant illustration Answer sheets are missing. Inside, there are only writings as shown in image 4. The first volume has a name written on it. Thank you for viewing.