Development of ILAU based on PBL-STEM model with formative assessment as an opportunity to improve problem solving skills in heat and temperature topics

Abstract

Independent Learning Activity Unit (ILAU) is a learning media that can develop independent learning strategies. However, instructional media that are based on contextual issues, practice aspects of STEM, and use independent learning strategies have not been developed. The purpose of this study was to develop and test the feasibility of ILAU based on Problem Based Learning (PBL)-STEM with formative assessment so that it was feasible to function as an opportunity to improve problem solving skills in heat and temperature topics for XIth grade of senior high school. The research design used Borg & Gall’s research and development model which consisted of three main steps: (1) initial study, (2) product development; (3) product testing. The instruments in this study were: (1) Learning Implementation Plan validation questionnaire; (2) ILAU validation questionnaire; (3) ILAU readability test questionnaire. The results of expert and practitioner validation showed that Learning Implementation Plan developed had average feasibility percentage of 100%, and ILAU had average feasibility percentage of 99%. The results of the readability test by 33 students showed that ILAU had average readability percentage of 93%. Thus, it can be concluded that Learning Implementation Plan and ILAU developed based on the PBL-STEM model with Formative Assessment have very feasible category so they can be used to improve problem solving skills.