ABSTRACT
This study aimed to describe how undergraduate students of a mathematics education study program performed microteaching with the topic of the incircle and the area of a triangle for VIII graders. The study involved descriptive qualitative research. The population included all sixth semester undergraduate students of a mathematics education study program, in the academic year 2016/2017, with students being randomly selected. The data were collected through observation, interview and documentation, and descriptively analyzed. The results showed that through a lesson plan guiding process, revision, and teaching practice using guided inquiry learning based on a scientific model, undergraduate students could actively construct their knowledge of the topic under study.
