Amazon.ca:Customer reviews: Orton Gillingham Tools For Kids With Dyslexia. 100 activities to help children with dyslexia differentiate and correctly use “b”, “d”, “p” and “q” letters. 6-8 years. Black & White Edition.
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.