Professionalism Development of High School Teachers in Improving the Ability to Implement Realistic Mathematics Education in East OKU Regency

Abstract

The results of the teacher competency survey from the 2018 Program for International Student Assessment (PISA) put Indonesia in rank 74 out of 79. This shows the low quality of teachers that has an impact on student achievement. The ability of students is very lacking, especially in the ability of understanding, reasoning, and solving mathematical problems. Therefore, a teacher as the main designer in the learning process is required to be able to master learning theory and learning princip les and be able to master and develop learning materials creatively. The princip les and creative learning materials are known as realistic learning models. Therefore, th is study aims to improve the competence of high school teachers (particularly in the East OKU d istrict) in implementing realistic mathematics education (RME). This research method is divided into three stages, namely: First Stage: socialization in the form of lectures and discussions about RME material. The second stage: workshop/training/assistance in program preparation, and preparation of teaching materials usin g RME. The third stage: the implementation of learning in schools, along with the monitoring system. The results of the analysis conclude that this study has increased the professional competence of teachers in implementing realist ic mathematics learning as indicated by its potential influence on student learning outcomes (the average score of students' abilities is 70.16). The average value of the results of observing student activities during learning is 3.09.