The Use Of Stem-Based LKS In Biology Learning and Their Effect On The Motivation And Learning Outcomes Of Students Of Class XI MIA In Samosir District

This research was conducted to determine the use of STEM-Based Worksheets in Biology Learning and its Relationship with Motivation and Learning Outcomes of Class XI MIA Students in Samosir Regency. The research was conducted in March-April 2022. This study used a quasi-experimental research type with a qualitative approach. Based on the results of research conducted, the use of LKS can contain various activities and activities for students in the form of demonstrations and experiments. STEM-based teaching materials can improve student learning outcomes. Based on the research data, it is known that students' learning motivation in the experimental class shows an average score of 80.45 and the control class an average of 75.01 which is included in the high category of the two classes. In this case, there is an effect of STEM-based worksheets in Biology learning on students' learning motivation. Students who have high motivation will be positive about their learning outcomes. This is supported by student learning outcomes in the experimental class that the average score is 67.85 higher than the control class with an average of 52.01. This proves that there is a significant increase from the control class that does not use worksheets to the experimental class that uses STEM-based worksheets.