Development of Problem Based Learning Model Learning Tools to Facilitate the Mathematical Problem Solving Abilities of Grade VII Students at Junior High School

Abstract

This research is development research (R&D) motivated by students' mathematical problem solving abilities (MPSA) and the limited learning facilities capable of facilitating students' MPSA. The research aims to produce a mathematics learning tool based on problem based learning with fulfillment of validation conditions which is also practical in order to support the MPSA of class VII at junior high school students in discussing social arithmetic. The development model is a 4D model developed by Tiagharajan and Semmel through four stages, namely define, design, develop, disseminate. The instruments for compiling research data are instruments were students daily test scores, test on students problem solving abilities, interview sheets, observation sheets, validation sheets and student response questionnaires. The study technique used is descriptive analysis. The learning tools were validated by three validators and also revised according to validator input, and tested in small groups for six students in class VII.2 at junior high school students and tested in large groups with 30 students in class VII.1 at junior high school students to see the practicality of the teaching materials in the form of student worksheets made with steps and questions on problem solving. Validation findings for syllabus, lesson plan, student worksheet are 3.52, 3.48, 3.48 in the very valid category. The findings of small group testing for student worksheet showed that student worksheet had been developed in line with practicality requirements with an average score of 3.31. The findings of large group testing for student worksheet obtained an average score of 3.50 and met the practicality requirements.