Development of teaching materials to improve the student’s high order thinking skills

This research aims to determine the effectiveness of the learning that accommodates the Problem Based Learning (PBL) learning model in curriculum 2013 using the development of teaching materials as a learning medium for students. In addition, the goal of the PBL process is to improve clinical reasoning skills through problem solving and critical thinking among students, but some students had difficulties in adapting PBL, that’s why this research tried to develop teaching materials to facilitate the students. This type of research was research and development (R&D) with 4D Thiagarajan step (define, design, develop, and disseminate). The teaching materials were validated by two experts (material experts and media experts). The material members consist of two experts who assess the content feasibility, presentation feasibility, and the High Order Thinking Skills (HOTS) components and the Polya steps. The media expert consisted of one person who assessed the language and graphing components. The results of the research show that the quality of the product is good, and can be seen from the validity, practicality, and also effectiveness. Acquisition of score for the content of the second component feasibility matter experts is 79.04%. Acquisition value for the presentation of the feasibility component is 87.85%. Acquisition of score for the HOTS and Technique of Polya step’s is 76.66%. Acquisition of score from student questionnaire responses in the presentation aspect is 96% and in the aspect of material presentation is 83.33%. The average difference in the final grade of an experimental class with a control class of 6.1083. Test results of effectiveness using T-tests showed that the use of teaching materials was effective for improving students’ high order thinking skills.