Development of Contextual Teaching and Learning (CTL) based Teaching Materials to Train Students’ Representation Ability

The purpose of this research is to produce teaching materials based on Contextual Teaching and learning (CTL) to train students' representational skills that are valid, practical, effective and to train students' representation skills at SMA Negeri 3 Martapura. The subjects of this study were students of class XI MIA 1 which amounted to 30 students. The method used in this research is the Plomp model development research which consists of three phases, namely preliminary research, prototype making phase (prototyping), and assessment phase (assessment phase). Data analysis techniques consist of analysis of the validity of teaching materials, analysis of practicality of teaching materials, analysis of the effectiveness of teaching materials and analysis of students' representational abilities. The data from the four analyzes were analyzed descriptively qualitatively by telling what was found during the research process. Data collection techniques used are walkthrough, questionnaire and post-test. From the results of research conducted by researchers stated that the teaching materials developed were included in the very valid category with a presentation of 86.6%, the effective category with an average value of 83.92, the practical category with a presentation of 83.42% and the results The post-test of students' representation abilities of class XI MIA 1 is very complete with an average of 89.8%.