The Hardest Logic Workbook for Gritty Kids: Spatial Reasoning, Math Puzzles, Word Games, Logic Problems, Focus Activities, Two-Player Games. (Develop ... & STEM Skills in Kids Ages 10, 11, 12.)
| Country | USA |
| Manufacturer | Two-Ten Book Press, Inc. |
| Binding | Kindle Edition |
| ReleaseDate | 2015-07-19 |
| Format | Kindle eBook |