Electronic Theses and Dissertation

Kata kunci: LKPD, Problem Based Learning (PBL), Kimia Hijau, Pencegahan Limbah, Pengembangan Bahan Ajar
Kurangnya penggunaan bahan ajar yang tepat dan tidak sesuai dengan kebutuhan menyebabkan kurangnya pemahaman peserta didik terhadap materi pelajaran serta minimnya pemanfaatan teknologi membuat pembelajaran menjadi monoton dan tidak variatifPenelitian ini bertujuan untuk mengembangkan Lembar Kerja Peserta Didik (LKPD) berbasis Problem Based Learning (PBL) pada materi Kimia Hijau pencegahan limbah yang valid, praktis, dan layak digunakan dalam proses pembelajaran. Model pengembangan yang digunakan dalam penelitian ini adalah model 4-D (Define, Design, Develop, dan Disseminate), namun penelitian ini dibatasi hanya sampai tahap Develop (pengembangan). Subjek uji coba terdiri atas dua orang guru kimia dan 25 peserta didik kelas X SMA Negeri 4 Takengon. Instrumen penelitian meliputi angket validasi ahli, angket tanggapan guru, dan angket tanggapan peserta didik. Data dianalisis secara deskriptif kuantitatif menggunakan rumus persentase kelayakan berdasarkan kriteria dari Azkiya et al. (2022). Hasil validasi menunjukkan bahwa aspek materi memperoleh nilai 89 %, aspek tampilan 81 %, dan aspek bahasa 89 %, dengan rata-rata keseluruhan berada pada kategori sangat layak. Sementara itu, hasil tanggapan guru terhadap LKPD yang dikembangkan memperoleh rata-rata 83 %, dan hasil tanggapan peserta didik mencapai 80,4 %, yang keduanya termasuk kategori sangat baik. Dengan demikian, LKPD interaktif berbasis Problem Based Learning (PBL) pada materi Kimia Hijau pencegahan limbah dinyatakan sangat layak digunakan sebagai bahan ajar. LKPD ini tidak hanya mempermudah peserta didik memahami konsep-konsep kimia hijau, tetapi juga mendorong mereka berpikir kritis, kreatif, dan kontekstual terhadap permasalahan lingkungan di sekitar.

Keywords: LKPD, Problem Based Learning (PBL), Green Chemistry, Waste Prevention, Learning Material Development The lack of appropriate and relevant learning materials has resulted in students’ limited understanding of the subject matter, while the minimal use of technology has made the learning process monotonous and less varied. This study aims to develop a Student Worksheet (LKPD) based on Problem Based Learning (PBL) for the topic of Green Chemistry: Waste Prevention, which is valid, practical, and feasible to be used in the learning process. The development model applied in this research is the 4-D model (Define, Design, Develop, and Disseminate), although this study was limited to the Develop stage. The subjects involved were two chemistry teachers and 25 students of Grade X at SMA Negeri 4 Takengon. The research instruments included expert validation questionnaires, teacher response questionnaires, and student response questionnaires. The data were analyzed descriptively and quantitatively using the percentage of eligibility formula based on the criteria from Azkiya et al. (2022). The validation results showed that the material aspect scored 89%, the design aspect 81%, and the language aspect 89%, with an overall average in the highly valid category. Meanwhile, the teacher response results averaged 83%, and the student responses reached 80.4%, both categorized as very good. Therefore, the interactive Problem Based Learning (PBL)–based LKPD on Green Chemistry: Waste Prevention is declared highly suitable for use as a learning material. This LKPD not only helps students better understand the concepts of green chemistry but also encourages them to think critically, creatively, and contextually about environmental issues in their surroundings.