Very good for encouraging writing skills
I have a reluctant writer and a prolific writer in my class. This book is very good for the former student, as it organizes his thoughts and encourages him to think concretely about his writing vocabulary and structure. The latter benefits from the vocabulary and exercise in sentence form and structure. The stories are short (about 5-10 sentences long), concise and to the point which helps to keep the focus on writing. I was recommended this for my reluctant 8-9 year old, and while it's helped him, the 10-11 year old benefited more as the language is a little more advanced. Still, begin early and you can re-use it again in the future at another level.