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 for my preschool student. He loved it. The illustrations were great and the information was simply stated. The text was presented in a visually appealing manner with additional text boxes for additional information. We read it often.