Abstract: Google classroom and quizizz are ways to optimize learning in virtual classes in the online era. The process and results of developing LSLC-based mathematics learning device using google classroom and quizizz media and their effect on students creative thinking skills on the material for the system of linear equations with three-variables in class X of Mathematics and Natural Sciences. The method used in this research was a combination research method or a mixed method between development research (research and development) using 4-D models (four-D models) and experimental research. Results of LSLC-based learning device using google classroom and quizizz media In improving students creative thinking skills, they met the criteria for the quality and feasibility of developing learning device that have been determined, namely meeting the criteria for validity, effectiveness and practicality.