Development of Calculus Teaching Material: Context of Universitas Timor, Indonesia

The current research development aims at producing a valid, practical, and useful deferential calculus teaching material. The teaching material referred to this study is a student worksheet with a constructivism approach. It applied development research method. It was conducted in two stages, namely preliminary analysis and formative evaluation stage. The results of the experts’ validation stated that the teaching material developed has reached the correct category. The results of one-on-one trials class indicate that the developed the material can be accepted and be used. Furthermore, field trial results, which was conducted to see the effectiveness aspect, have met the criteria. In other words, the current research has produced a valid, practical, and useful derivative calculus teaching material that focuses on teaching material and its supporting components, including syllabus, and lesson plans.