Teacher's manuals were developed in the early years of the twentieth century to provide teachers with information on how to present new teaching techniques in reading. Over the years, these manuals have continued to attempt not only to present new techniques and ideas in response to research but also to provide teachers with increased amounts of materials so that teachers can offer instruction to meet the needs of individual children. No manual can ever take the place of a well-prepared teacher, but most manuals provide suggestions and supplementary materials which can be valuable to teachers.
Robinson, L. S. (1992). The Development of Basal Reader Teacher's Manuals. Reading Horizons, 32 (3). Retrieved from https://scholarworks.wmich.edu/reading_horizons/vol32/iss3/5