Transformations in U.S. comercial high school geometry textbooks since 1960: a brief report.

Autor/in	Usiskin, Zalman
Titel	Transformations in U.S. comercial high school geometry textbooks since 1960: a brief report.
Quelle	Aus: Jones, Keith (Hrsg.): Proceedings of the International Conference on Mathematics Textbook Research and Development (ICMT-2014). Southampton: University of Southampton (2014) S. 471-476 PDF als Volltext kostenfreie Datei Link als defekt meldenVerfügbarkeit
Beigaben	grafische Darstellungen; Literaturangaben S. 476
Sprache	englisch
Dokumenttyp	online; Sammelwerksbeitrag
ISBN	978-0-85432-984-7; 978-0-85432-985-4
Schlagwörter	Sekundarstufe II; Wirtschaftsgymnasium; Rahmenrichtlinie; Schulbuch; Geschichte (Histor); Geometrie; Mathematikunterricht; Online-Publikation; USA
Abstract	In the United States, the formal study of Euclidean geometry, including significant attention to congruent and similar figures, has been traditionally concentrated in a single one-year high school course. The Common Core State Standards for Mathematics (CCSSM, 2010), which have been approved by well over 80% of the states, call for congruence and similarity in this course to be understood in terms of geometric transformations, and for the traditional criteria for two triangles to be congruent or similar to be developed through these transformations. However, it seems that many teachers of geometry in the United States have little or no idea of what this means. This study examined 64 textbooks those teachers might have used in their high school experience to see what they could have learned about transformations when they were students. Herein is a brief summary of results.
Erfasst von	Leibniz-Institut für Bildungsmedien \| Georg-Eckert-Institut (GEI), Braunschweig
Update	2015/3