EJMT Abstract

Curves and surfaces in 3-dimensional Euclidean space are studied in elementary differential geometry courses, and so effective visual teaching materials are indispensable. By using KeTCindy, we can present such materials to explain the concepts of the curvatures of curves and surfaces. Materials created with KeTCindy contain animation and are given in PDF slide format, so they are available in many environments. In this paper, we introduce these materials and their use in the classroom.