This research on the development of student worksheets for environmental based physics learning with a STEM approach aims to: 1) design an student worksheets for environmental based physics learning with a STEM to students SMA Negeri 1 Sendana that is valid from a theoretical and empirical persective, 2) to analyze practitioners asessments of student worksheets for environmental based physics learning with a STEM for students SMA Negeri 1 Sendana, 3) to analyze the effectiveness of student worksheets for environmental based physics learning with a STEM for students SMA Negeri 1 Sendana. The research method with 4D model. The test subjects for this research were class XI IPA 1 students as the control class and XI IPA 4 as experimental class. Based on the results of the analysis, the following concludions wewe obtained: 1) the student worksheets for environmental based physiscs learning with a Stem approach based on theoretical and empirical validity is recommended as suitable for use. 2) the analysis of practitioners’ responses to the developed LKPD showed that the average score wa 131,67 which shows very good criteria. 3) the average physics learning outcomes for classes that use Environmentally Based Physics Learning LKPD with a STEM Approach are higher (effective) than the average physics learning outcomes for classes that do not use Environmentally Based Physics Learning LKPD with a STEM Approach. the student worksheets for environmental based physiscs learning with a Stem approach is declared valid, practical and effective so it is suitable for use as a learning resource.