History of the Slovak language ). The usage of Czech in Slovak environment resulted to the Slovakized Czech language - a variant of cultural Czech with Slovak elements. This variant existed since the penetration of Czech to present-day Slovakia and was used e.g. in city books, official correspondence, etc. Early writings had a various frequency of Slovak elements caused by a poor knowledge of standard Czech among many Slovak native speakers, the influence of vernacular language and cultural Slovak. The normalized form of Slovakized Czech existed since the 17th century. In the normalized form, Czech letters and words were systematically replaced by their Slovak equivalents.
Detroit Day School for the Deaf Detroit Day School for the Deaf Detroit Day School for the Deaf (DDSD) was a public school for deaf students in Detroit, Michigan for grades Pre-Kindergarten through 8. It was a part of Detroit Public Schools. At the school, the main mode of communication was American Sign Language. When it operated, the school had an early intervention program for children who were hard of hearing and deaf; the program served 300 children. The school was established in 1893. At the time, the common practice in American education was to send deaf children to boarding schools; Detroit Day School was intended