My 4 year old daughter loved it. The only reason I gave it 4 stars instead of 5 is because she sat down and read the entire book in one go. We had to redo a few with higher numbers (15-20) as she didn't get it right. It took her about an hour to finish all the pages, including coloring. The book is not very long. I think if I reorder any books I'll try to get one of the BIG books. I also prefer workbooks with torn pages, which aren't included in this book. This makes it easy to limit the number of pages my daughter works on while I work. Hope that helps.