DEVELOPMENT OF AFFECTIVE ASSESSMENT INSTRUMENT ON MATHEMATICS LESSONS BASED ON FACIAL EXPRESSION OF ELEMENTARY SCHOOL STUDENTS

DEVELOPMENT OF AFFECTIVE ASSESSMENT INSTRUMENT ON MATHEMATICS LESSONS BASED ON FACIAL EXPRESSION OF ELEMENTARY SCHOOL STUDENTS A.Tenritte, Ruslan, Asdar Mathematics Education Postgraduate Program Universitas Negeri Makassar, Indonesia e-mail: atenritte105@gmail.com ABSTRACT This research was aimed to development of affective assessment instrument on mathematics lessons based on facial expression of elementary school students that is valid, reliable, and effective and also to describe students affective toward mathematics lessons. The research method used Research and Development or RnD which refers to the Plomp model. This research involves 2 classes with research subjects of all grade 2 and grade 3 students in SD Inpres 6/80 Sanrego with the total of 25 students. In this research developed consisted of research instruments and research products. The affective assessment instrument is a questionnaire using a modified semantic differential scale using 4 images of facial expression, which is very happy, happy, less happy, and unhappy. Data collection consists of several processes, the first instrument validation process, then for affective assessment done directly, then for verification data from questioner used by affective observation sheet and informal interview with subject. Questionnaires about affective toward mathematics lessons was read directly in front of students, then students were asked to choose facial expressions that match the questions read by the researcher. Data analysis techniques used to achieve the objectives of content validity analysis, criterion validity analysis, instrument reliability analysis, descriptive analysis, and product effectiveness analysis. Based on the results of research, it was found that the instrument of affective assessment toward mathematics lessons based on facial expression of elementary school students is valid, reliable, and effective. In addition, students feel happy about mathematics lessons and very enthusiastic in learning mathematics. Keywords: affective assessment, facial expression, mathematics lesson