The Mathematics of the Heavens and the Earth: The Early History of Trigonometry by Glen van Brummelen by Clemency Montelle and Kathleen M. Clark

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Mathematics History and Cognitive Values on a Didactic Sequence: Teaching Trigonometry by Helenara Regina Sampaio Figueiredo, Irinéa de Lourdes Batista

“…To conduct the survey, we organized the activities in sequence as proposed by the Didactic Engineering, based on the history of trigonometry. The study was carried out with high school students of a public school in Londrina and it had a qualitative nature. …”
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