G-Brain Workout Series, Math Workbook for 5th Graders - Series Name: G-Brain Workout - Grade Level: 5th Grade - Subject: Math - Publisher: Gnoble ◆No.7 Speed (1) - Traveler's Problem - ◆No.8 Speed (2) - Diagram - ◆No.9 Speed (3) - Movement of a Point on a Figure 1 - ◆No.10 Speed (4) - Movement of a Point on a Figure 2 - I have lost the memo with the writing, so I cannot specify the details, but including other items for "G-Brain Workout 5th Grade Math", there is pencil writing on several pages of a few books, which has been erased with an eraser. There were auxiliary lines drawn on diagrams and graphs, and I don't think there were any answers written in.