In the 1930’s, Dr. Samuel Orton and Anna Gillingham developed a language based approach to reading instruction, now commonly known as the Orton Gillingham Approach. It was originally designed to help struggling readers by explicitly teaching them the connections between sounds and letters. Nowadays, Orton Gillingham is a highly structured, multisensory approach, widely used with beginning and struggling readers.
Controlled readers or decodable books are books that contain only the phonetic sounds and skills your child has mastered. And, yes, they are important! Give a student a book they can fully decode and they can not only practice their learned decoding skills, but also increase their confidence and reading fluency.