Mathematical Communication Reviewed from Students' Self-Efficacy in Problem Based Learning Assisted by Google Site

Abstract

Mathematical communication is one of the very important skills possessed by students to support the process of understanding in learning mathematics. However, in fact, the level of students' mathematical communication skills is less than optimal, so quality learning is needed. The purpose of this study was to test the quality of Problem Based Learning model learning by utilizing Google Site on students' mathematical communication skills; to test the influence of students' self-efficacy on mathematical communication skills; and to describe mathematical communication skills in terms of students' self-efficacy. This study used a mixed method of sequential explanatory type. The use of Google Site was applied in this study during the learning process. The results of the study showed that problem-based learning assisted by Google Site was of high quality towards students' mathematical communication skills, as indicated by (1) the results of the validation of learning tools in the good category; (2) the results of learning observations in the good category; (3) effective learning, namely a) the average mathematical communication skills of students in the experimental group reached KBM; b) the proportion of mathematical communication skills completion of students in the experimental group reached classical learning completion of 75%; c) the average mathematical communication ability of students in the experimental group is greater than the average of students in the control group; d) the proportion of mathematical communication ability completion of students in the experimental group is greater than the proportion of students in the control group; e) there is an increase in the mathematical communication ability of students in the experimental group. Self-efficacy of the experimental group has a positive effect on students' mathematical communication skills. Description of mathematical communication skills in terms of high self-efficacy meets all indicators of mathematical communication; students with moderate self-efficacy meet three indicators of mathematical communication; and students with low self-efficacy meet two indicators of mathematical communication.