The books quality is pretty good buts the book itself is the problem.My child will sometimes get angry when not being able to solve the problem so she would go look at the textbook but she would often say the textbook does not make any since and i would have to agree,For starters to understand the textbook you would need to remember all the many characters names plus the animations are such a distraction.Back to the workbook if my child cant figure out a problem and has to check the textbook and the textbook does not make since this is not a good book.I don't mind helping my child a few times but every single day its just slipping.My child is still learning and once i explain it to her she understands it but i could have also just not bought the book and taught it to her myself i am spending the same amount of time with the book as i would without the book.