This research was conducted due to the lack of availability of practical tools of thermodynamic learning in SMA Kristen Tumou Tou Bitung, Indonesia. This research’s aims were to: 1) develop learning tools and media for performance appraisal and technological application approaches to learn the laws of Thermodynamics; 2) test the feasibility of product development tools and instructional media by evaluating performance and technological application approaches to the Laws of Thermodynamics Learning. This research used the "Research and Development" method following the stages of development research according to Brog and Gall. Retrieval of data in this development research used small and large groups test and student questionnaire responses. The average percentage of the assessment process in the small group and large group test was obtained 90.38% and 84.01%, and the results of the small group and large group responses test were 96.6% and 99%. The result of product development was at 81% -100% feasibility level, therefore the thermodynamic learning tools and media are very feasible to use.
Keywords : Performance Assessment; Technology Application; Thermodynamics.