Pengembangan LKPD Berorientasi PBL dan Literasi Sains untuk Meningkatkan Keterampilan Berpikir Kritis Peserta Didik pada Materi Larutan Penyangga

Development of Student Worksheets Oriented to PBL and Scientific Literacy to Improve Student’s Critical Thinking Skills on Buffer Solution Material 

Penelitian ini bertujuan untuk mengembangkan LKPD berorientasi PBL dan literasi sains yang layak digunakan untuk meningkatkan keterampilan berpikir kritis peserta didik. Kelayakan LKPD ditinjau berdasarkan validitas, kepraktisan, dan keefektifan. Validitas LKPD ditinjau dari penilaian para ahli. Kepraktiksan didasarkan oleh respon peserta didik yang ditunjang dengan aktivitas saat pembelajaran. Keefektifan didasarkan oleh peningkatan keterampilan berpikir kritis peserta didik yang ditinjau dari ketuntasan belajar klasikal, N-gain, dan uji statistika non parametrik. Penelitian ini menggunakan metode Research and Development (R&D) yang dikembangkan oleh Borg and Gall, dengan subjek penelitian sebanyak 18 orang peserta didik kelas XI SMAN 20 Surabaya. Instrumen penelitian yang digunakan adalah lembar validasi, angket respon, lembar observasi aktivitas peserta didik, serta lembar soal pretest dan posttest. Hasil penelitian menunjukkan bahwa LKPD yang dikembangkan layak digunakan. Validitas LKPD ditinjau dari kriteria isi dan konstruk yang memperoleh modus skor 5 dengan kategori sangat baik. LKPD dinyatakan sangat praktis, ditinjau dari respon positif peserta didik dengan rentang 88,9%-100%. Hal ini juga ditunjang dengan aktivitas yang relevan lebih besar daripada aktivitas tidak relevan. Keefektifan LKPD ditinjau dari ketuntasan belajar klasikal sebesar

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89%, N-gain kriteria sedang dan tinggi pada indikator interpretasi, analisis, dan eksplanasi, serta uji hipotesis dengan nilai Sig. < 0,05.

This research aims to develop student worksheet that is feasible to be used to improve critical thinking skills in learners. The feasibility of student worksheet is reviewed based on validity, practicality, and effectiveness. The validity of student worksheet is reviewed from the assessment of experts. Practice is based on student responses supported by activities during learning. Meanwhile, effectiveness is based on improving students' critical thinking skills in terms of classical learning completeness, N-gain, and non-parametric statistical tests. This research uses the Research and Development (R&D) method developed by Borg and Gall, with the subject of research as many as 18 students of grade XI SMAN 20 Surabaya. The research instruments used are validation sheets, response questionnaires, student activity observation sheets, and pretest and posttest question sheets. The results showed that the developed student worksheet was feasible to use. The validity of student worksheet is seen from content and construct validity which obtained a score mode of 5 with a very good category. The practicality of student worksheet is seen from the positive response of students with a range of 88,9%-100% which is categorized as very practical. It is also supported by activities that are more relevant than irrelevant activities. The effectiveness of student worksheet is seen from the completeness of classical learning of 89%, medium and high N-gain criteria, and hypothesis tests with Sig. < 0,05 values.