Summary: | The history of deaf education and sign language are very intertwined. It seems that
this last one would not exist without the first. In discussions about educational philosophies, the
deaf and their language become completely invisible. Therefore, the purpose of this article is to
highlight reflections and studies on sign languages, and not just on the history of deaf education. For
this, the literature review provides an overview of the sign language history based on primary and
secondary sources, allowing to recompose important facts, such as the linguistic considerations of
deaf researchers. In addition, it expands the ideas about the origin of the signed languages.
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