To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
I bought this book for my six year old girl. This is the right one. The ideas are not so complicated and easy to follow. I guess this will take her a while to work on. Paper quality is good, bright pictures. Lovely gift!