Development of Student Worksheets (LKPD) Based on Critical Thinking Skills Environmental Change and Waste Recycling Materials

Based on the results of observations at SMA Negeri 1 Parepare, obtained data that educators have not implemented LKPD that supports students to develop critical thinking skills. In this regard, it is overcome by making LKPD products based on critical thinking skills.This study aims to determine the validity and practicality of student worksheets (LKPD) based on critical thinking skills on environmental change and waste recycling materials for class X MIPA SMA Negeri 1 Parepare. This type of research is research and development (R&D) by adapting the learning development model from Thiagarajan known as 4-D, namely defining, designing, developing, and disseminating. However, the results of the development in this study were only at the develop stage, which only produced LKPD products based on critical thinking skills. Based on the results of the validation analysisobtained the average value of the total validation is 1.The results of the educator's questionnaire analysis obtained a total average value of 96% with a very practical interpretation and the student's questionnaire analysis obtained a score of 85.11% with a very practical interpretation. Thus, it has produced LKPD based on critical thinking skills of recycled environmental change materials for class X SMA that are valid, feasible and practical.