Abstract: The purpose of This research is to develop teaching and learning of physics in high school based on guided discovery learning model that usable to improve problem-solving skills and student learning outcomes on heat topic. Teaching and Learning materials was developed using 4-D models (define, design, develop, and disseminate) that limited to develop stage and tested using one group pretest-posttest design. The test of teaching and learning materials was conducted for class XI of SMAN 1 Batu Engau in 2017/2018 year. The data collected through observation, tests and questionnaires.