- A new learning trajectory for trigonometric functions
- 11th International Conference on Technology in Mathematics Teaching
- Book/source title
- Proceedings of ICTMT11
- Pages (from-to)
- Bari, Italy: University of Bari
- Document type
- Conference contribution
- Faculty of Science (FNWI)
- Korteweg-de Vries Institute for Mathematics (KdVI)
Educational research has shown that many secondary school students consider the subject of trigo-nometric functions as difficult and only develop shallow and fragmented understanding. It is un-clear which of the two popular approaches to introducing trigonometry, namely the ratio method and the unit circle method, works best. In this study we propose a new framework for trigonometric understanding and a new, dynamic geometry supported trajectory for learning trigonometric func-tions. We also report on the results of a classroom case study in which the new approach has been implemented and researched. We discuss the task-related difficulties that students faced in their concept development and we describe their trigonometric understanding in terms of our framework.
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