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 analyzes reviews to verify trustworthiness.
I was disappointed in this purchase. The books really don't go into depth in the lessons. It's hard to know if my kids are really grasping the materMe. I feel like there is so much more about phonics that this book just doesn't cover even for a first grader.