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.
possibly the best book I've ever bought for my kids. I don;t think my kids enjoy as much as I do because it's definitely a lesson for parents as much as children. whoop whoop Andrea Beaty- good on you.