This research explores two methods through which ten preservice math teachers develop an understanding of trigonometric values. Using the unit circle, preservice math teachers engage in knowledge-building activities such as paper folding and GeoGebra application. Grounded in Altman and Kidron's 2016 didactical design research, this study examines…

Technology-supported education has become increasingly important and popular. Although it has long been claimed that a technology-enhanced learning environment is often more motivating than its traditional counterpart, not too many inspiring empirical studies have been carried out. In this article, the traditional approach in the motivation…