Pengembangan Lembar Kegiatan Peserta Didik Elektronik Berbasis Problem Based Learning Pada Sub Materi Pencemaran Lingkungan Untuk Melatihkan Keterampilan Berpikir Kritis

Development of Electronic Student Worksheet Based Problem Based Learning on The Environmental Pollution Sub Material to Train Critical Thinking Skills

Berpikir kritis merupakan salah satu tuntutan keterampilan abad ke-21 yang dibutuhkan peserta didik. Problem based learning merupakan salah satu model pembelajaran yang dapat diterapkan untuk melatihkan keterampilan berpikir kritis peserta didik. Upaya melatihkan keterampilan berpikir kritis dapat dilakukan dengan menggunakan bahan ajar yang sesuai dengan abad ke-21 yaitu dalam bentuk elektronik. Penelitian ini bertujuan menghasilkan E-LKPD berbasis problem based learning pada sub materi pencemaran lingkungan untuk melatihkan keterampilan berpikir kritis yang valid, praktis dan efektif. Metode penelitian ini menggunakan model pengembangan 4D (define, design, develop dan disseminate) tanpa tahap disseminate. Parameter penelitian ini yaitu validitas E-LKPD ditinjau dari penilaian ahli, kepraktisan E-LKPD ditinjau dari keterlaksanaan penerapan E-LKPD dan respons peserta didik, keefektifan E-LKPD diperoleh dari ketercapaian keterampilan berpikir kritis. Instrumen penelitian ini diperoleh dari lembar validasi, lembar observasi, lembar angket dan lembar tes. E-LKPD dikategorikan valid apabila skor validasi ≥2,51, praktis apabila persentase keterlaksanaan penerapan E-LKPD ≥75% dan respons peserta didik ≥75%, efektif apabila persentase ketercapaian keterampilan berpikir kritis ≥75%. Data dianalisis secara deskriptif kuantitatif. Hasil uji validasi E-LKPD sebesar 4,00 (sangat valid). Hasil uji kepraktisan E-LKPD berdasarkan keterlaksanaan penerapan E-LKPD sebesar 96,67% (sangat baik) dan respons peserta didik sebesar 96,66% (sangat positif). Hasil uji keefektifan E-LKPD berdasarkan ketercapaian keterampilan berpikir kritis indikator interpretasi, analisis dan eksplanasi secara berturut-turut sebesar 100%, 89% dan 91% (sangat baik). Dengan demikian, dapat disimpulkan bahwa E-LKPD yang dikembangkan valid, praktis dan efektif, sehingga E-LKPD layak digunakan oleh peserta didik.

Kata Kunci: E-LKPD, problem based learning, pencemaran lingkungan, berpikir kritis.

Critical thinking is one of the 21st-century skill demands students need. Problem based learning is a learning model that can be applied to train students' critical thinking skills. Efforts to train critical thinking skills can be made by using teaching materials that are in accordance the 21st century, namely in electronic form. This study aims to produce E-LKPD based problem based learning on the environmental pollution sub material to train valid, practical and effective critical thinking skills. This research method uses the 4D development model (define, design, develop and disseminate) without the disseminate stage. The parameters of this study are the validity of the E-LKPD in terms of expert judgment, the practicality of the E-LKPD in terms of the implementation of the E-LKPD and the responses of students, the effectiveness of the E-LKPD is obtained from the achievement of critical thinking skills. The research instrument was obtained from validation, observation, questionnaire and test sheets. E-LKPD is categorized as valid if the validation score is ≥2.51, practical if the percentage of implementation of the E-LKPD is ≥75% and student responses are ≥75%, effective if the percentage of achievement of critical thinking skills is ≥75%. Data were analyzed by descriptive quantitative. The results of the E-LKPD validation test were 4.00 (very valid). The results of the practicality test of the E-LKPD based on the implementation of the E-LKPD were 96.67% (very good) and the student response was 96.66% (very positive). The results of the E-LKPD effectiveness test based on the attainment of critical thinking skills indicators of interpretation, analysis and explanation were 100%, 89% and 91% (very good). Thus, it can be concluded that the developed E-LKPD is valid, practical, and effective, so the E-LKPD is suitable for use by students.

Keywords: E-LKPD, problem based learning, environmental  pollution, critical thinking.