The research conducted was a research on media development in the form of electronic module in mathematics learning using a STEM-Collaborative Project Based Learning model which is believed to improve the mathematical literacy skills of vocational high school students. The test subjects in this study were students of Vocational High School 1 Panji Situbondo where the data analysis technique used in this development research was descriptive analysis techniques. The quantitative data that had been obtained from the Likert scale measurement were converted based on the weighted score that has been determined. This data is quantitative data which were further analyzed by descriptive statistics. The scores obtained from the questionnaire were then converted so that the eligibility percentage was known and the conclusion that the e-module developed was valid, practical and efficient. The benefit that could be obtained from this research was the contribution of thoughts to improve the quality of education, especially in mathematics learning by presenting new insights regarding the preparation of learning tools in the form of e-modules as an alternative to learning media for mathematics to improve the quality of the learning process.

Learning mathematics is a science that is learned as a very important basis for everyday life the lesson study for learning community learning process that prioritizes group learning that involves peers in learning so that the creative thinking process between students increases. Along with the development of very sophisticated technology demands online-based learning to facilitate the learning process and able to support students’ creative thinking which can be measured from fluency, flexibility, originality and elaboration. The research aimed to develop lesson study for learning community based learning tools using google classroom media on three-variable linear equations material for X grade high school students and to determine the effect on students’ creative thinking abilities. This research uses a mix method with a sequential Explorstorydesign combination model with a thiagardjan development model through the 4D domain, which are define, design, develop and deseminate inexperimental research using the nonequivalent control design with the results obtained from the pretest value functions to determine the initial knowledge and posttest for knowing knowledge after being given treatment. The results showed that the lesson study for learning community based learning tools using google classroom media were valid, practical and effective and had a significant impact on creative thinking.