<![CDATA[ABSTRAK Penelitian ini bertujuan untuk meningkatkan kemampuan keterampilan kolaborasi siswa dengan menggunakan Problem Based Learning (PBL). Penelitian ini dilaksanakan di SMA Negeri 1 Anyer. Subjek penelitian ini adalah siswa kelas X, Objek penelitian ini adalah model PBL dan keterampilan kolaborasi siswa. Hasil penelitian pada pada pembelajaran sebelumnya menunjukan nilai keterampilan kolaborasi siswa masih dikatakan kurang, yakni peserta didik belum berkomunikasi dan bertukar pendapat, Peserta didik belum bekerja secara produktif dalam menyelesaikan masalah. Setelah menerapkan keterampilan abad 21 sesuai indicator, mengalami peningkatan yaitu nilai kolaborasi siswa menunjukkan 89,10 dengan kriteria Sangat Baik. Menerapkan model PBL dengan LKPD Liveworksheet ternyata dapat memperoleh ketuntasan dalam hasil belajar. Hal ini berarti, peserta didik mampu mengikuti pelajaran dengan model PBL. Dari hasil penelitian ini dapat dijelaskan bahwa, dengan menerapkan model PBL dengan LKPD Liveworksheet dalam pelajaran Biologi, mampu meningkatkan keterampilan kolaborasi abad 21 siswa pada materi Perubahan Lingkungan kelas X. Kata kunci: Perubahan Lingkungan, Kemampuan Kolaborasi abad 21 siswa, Problem Based Learning. APPLICATION OF PROBLEM-BASED LEARNING (PBL) MODEL WITH LKPD LIVEWORKSHEET TO ENHANCE 21ST CENTURY COLLABORATION SKILLS OF STUDENTS IN THE TOPIC OF ENVIRONMENTAL CHANGES ABSTRACT This research aims to enhance students' collaboration skills using Problem-Based Learning (PBL). The study was conducted at SMA Negeri 1 Anyer, with the subjects being grade X students. The research focused on the PBL model and students' collaboration skills as the objects of the study. The findings from the previous learning sessions indicated that students' collaboration skills were considered insufficient. Participants were not effectively communicating and exchanging ideas, and they were not working productively to solve problems. After implementing 21st-century skills indicators, there was an improvement, with the collaboration skills score reaching 89.10, classified as Excellent. Applying the PBL model with Liveworksheet LKPD proved to be effective in achieving learning outcomes. This implies that students were able to engage in lessons using the PBL model. The results of this research demonstrate that implementing the PBL model with Liveworksheet LKPD in Biology lessons can enhance 21st-century collaboration skills among grade X students, particularly in the topic of Environmental Changes. Keywords: Environmental Changes, 21st Century Collaboration Skills of Students, Problem-Based Learning.]]>
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