Este artigo é um ensaio teórico sobre o conhecimento doprofessor onde são confrontadas as perspectivas de três autores- Donald Schön, Freema Elbaz e D. Jean Clandinin - destacando,em cada um deles, as principais dimensões e componentes usadasna caracterização desse conhecimento. Tomamos como pontode partida a crítica de Schön ao modelo da ‘racionalidade técnica’e procuramos depois mostrar que esses autores desenvolvem aidéia de um saber específico do professor como um tipo deconhecimento que tem na prática, a um tempo, a sua fonteprincipal e lugar de manifestação. Pretendemos, igualmente,mostrar que com a idéia de ‘conhecimento prático’ defendida -com uma natureza experiencial, situacional e pessoal - se procuraevitar a sua identificação com um conhecimento meramentetécnico e ultrapassar algumas dicotomias habituais no estudo ecaracterização de formas de conhecimento, nomeadamente,teoria-prática, razão-emoção, objetivo-subjetivo, individualsocial,conteúdo-estrutura.
IntroductionAbundant literature is available on the history of algebra. However, the history of the teaching of algebra is largely unwritten, and as such, this chapter essentially constitutes some notes that are intended to be useful for future research on this subject. As well as the scarcity of the works published on the topic, there is the added difficulty of drawing the line between the teaching of algebra and the teaching of arithmetic-two branches of knowledge whose borders have varied over time (today one can consider the arithmetic with the four operations and their algorithms and properties taught in schools as nothing more than a small chapter of algebra). As such, we will be very brief in talking about the more distant epochs, from which we have some mathematics documents but little information on how they were used in teaching. We aim to be more explicit as we travel forwards into the different epochs until modern times. We finish, naturally, with some reflections on the present-day and future situation regarding the teaching of algebra.
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