Abstract

This research is a development research that aims to describe the validity of the problem-based learning model of environmental change in class X SMAN 1 Tilango. The learning tools developed are Learning Implementation Plans, Student Worksheets and Learning Outcomes Tests. The instrument used in this study was a validation sheet to evaluate the product. The results showed that the quality of the product produced based on the validity of the lesson plans met the very valid criteria with an average value of the validator of 105, the LKPD met the very valid criteria of the validator with an average of 108 and the learning outcome test met the very valid criteria with an average value of 70.3. Based on the results of the study, it can be concluded that problem-based learning tools on environmental change materials meet the valid criteria.