F.P. Cahyani, Irwan
This research discusses the development of mathematics learning media based on problem-based instruction (PBI) to enhance students' critical thinking skill in grade X. The developed learning media are lesson plan and students' worksheets. The research was conducted until preliminary research phase including need analysis, student analysis, curriculum analysis and concept analysis by using Plomp model (Preliminary Research, Prototyping Phase, and Assessment Phase). Data collected through observation, questionnaire, and interview. The sample is Grade X students of SMAN 15 Padang. The results shown that the learning media used are not facilitating students' critical thinking skill in teaching-learning process. © 2020 Published under licence by IOP Publishing Ltd.
Mathematics Department, Universitas Negeri Padang, Padang, Indonesia
