<![CDATA[Biology learning at SMAS Taman Siswa Sukadamai has not used worksheets as teaching materials, teachers only use textbooks in the learning process so that the teacher-centered biology learning process becomes uninteresting and monotonous. This study aims to produce ctl-based worksheets on ecosystem material. The model used in this study is the ADDIE development model which consists of 5 stages, namely analysis, design, development, implementation and evaluation. This research data collection technique through interviews, observation, questionnaires and tests. The research results based on the assessment of material experts obtained a score of 88% and media experts by 92% with the category very suitable for use in learning. The teacher and student assessment responses during the try-out obtained a score of 90% for teachers and 83.37% for students in the very practical category for use in learning. The results of applying the CTL-based LKPD on ecosystem material to student learning outcomes obtained quite effective results with an n-gain value of 0.67 in the quite effective category. It can be interpreted that CTL-based worksheets on ecosystem material are very feasible and can be used in the learning process.Keywords: student worksheet, Contextual Teaching and Learning, Biology learning.DOI: http://dx.doi.org/10.23960/jpmipa/v24i1.pp191-202]]>
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