Development of mathematical learning devices based on realistic mathematics education (RME) in senior vocational school

Abstract

This study is development of mathematical learning devices based on Realistic Mathematics Education (RME) in the chemical engineering expertise program in students in class XI senior vocational schools that supports valid, practical and effective problem-solving skills. This research is development research. The method used in the research is the method of developing Plomp with stages: (1) preliminary research (initial research), (2) prototyping phase (development stage), and (3) assessment phase (assessment phase). The product is a learning device. Learning tools developed include: (1) Lesson plan and (2) Student Worksheets. (1) analyzing the needs, (2) the draft development process, (3) drafting the development, (4) expert reviews and trials carried out in several stages namely (a) expert review and learning media experts, (b) analysis and revision I, (c) expert review of learning design, (d) analysis and revision II, (e) individual trials and small group trials, (f) analysis and revision III, (g) field trials: class and teacher, (h) analysis and revision IV, and (i) end product development results.