Understanding of Slope of a Straight Line in Communication Context

Abstract

This paper describes the understanding of slope of a straight line among Semester One Science Foundation students in communication context based on radical constructivism. This study uses the purposive sampling method. The data were collected through clinical interview techniques, while the research instrument involved four types of clinical interview protocols. The study found that students' communication of slope of a straight line can be categorized into seven aspects, namely defining slopes, defining positive slopes, defining negative slopes, defining slopes of “−3”, calculating slopes, using linear equations, and drawing graphs.