Pengembangan Lembar Kerja Peserta Didik Elektronik (E-LKPD) Liveworksheet Berorientasi Problem Based Learning untuk Melatih Keterampilan Berpikir Kritis Peserta Didik pada Materi Asam Basa

Development of Electronic Student Worksheet (E-Worksheets) Based on Problem-Based Learning (PBL) to Train the Critical Thinking Abilities of Students' on Acid-Base Topics

Penelitian ini bertujuan untuk mengembangkan lembar kerja peserta didik elektronik (E-LKPD) liveworksheet yang berorientasi problem based learning (PBL) untuk melatih keterampilan berpikir kritis peserta didik pada materi asam basa yang ditinjau dari aspek validitas, kepraktisan, dan keefektifan. Penelitian ini merupakan penelitian Research and Development (R&D) dengan menggunakan model pengembangan ADDIE (Analyze, Design, Development, Implementation, and Evaluation) dibatasi sampai tahap development atau pengembangan. Penelitian ini dilakukan di SMA Negeri 1 Krembung pada kelas XI-2 dengan satu kelas sebanyak 34 peserta didik. Hasil penelitian menunjukkan bahwa modus validitas isi sebesar 3 dan modus validitas konstruk sebesar 3 dengan kategori baik. Kepraktisan E-LKPD ditinjau berdasarkan hasil angket respon peserta didik dengan persentase sebesar ≥ 61% pada semua aspek dengan kategori sangat baik. Selain itu, kepraktisan didukung oleh aktivitas peserta didik yang relevan pada pertemuan pertama dan kedua, diperoleh persentase sebesar 93,33% dan 95,55% dengan kategori sangat baik. Keefektifan E-LKPD dinilai dengan mengukur peningkatan keterampilan berpikir kritis menggunakan skor N-gain pada pretest dan postest keterampilan berpikir kritis peserta didik, diperoleh hasil peningkatan antara 0,66 sampai 1 pada kategori sedang dan tinggi. Kemudian data hasil pretest dan postest dianalisis menggunakan uji normalitas, yang menghasilkan nilai signifikasi pretest sebesar 0,621 dan nilai signifikasi postest sebesar 0,231 sehingga data berdistribusi normal, karena nilai signifikasi > 0,05. Selanjutnya diuji menggunakan uji paired sample t-test diperoleh nilai signifikasi hasil sebesar 0,000 < 0,05 yang menunjukkan adanya perbedaan yang signifikan antara skor pretest dan postest dalam keterampilan berpikir kritis peserta didik. Berdasarkan hasil tersebut, dapat disimpulkan bahwa E-LKPD liveworksheet berorientasi problem based learning dikatakan layak digunakan untuk melatih keterampilan berpikir kritis peserta didik pada materi asam basa.

The purpose of this study is to develop a problem-based learning (PBL)-oriented electronic student worksheet (E-Worksheet) to train students' critical thinking abilities on acid-base topics in terms of validity, practicality and effectiveness. This research is a Research and Development (R&D) research using the ADDIE (Analyze, Design, Development, Implementation, and Evaluation) development model limited to the development stage. This research was conducted at Senior High School 1 Krembung in class XI-2 with a class of 34 students. The results showed that the content validity mode was 3 and the construct validity mode was 3 with a good category. The practicality of E-Worksheet is reviewed based on the results of the student response questionnaire with a percentage of ≥ 61% in all aspects with a very good category. In addition, the practicality is supported by relevant learner activities in the first and second sessions, which obtained a percentage of 93.33% and 95.55% with a very good category. The effectiveness of E-Worksheet is assessed by measuring the improvement in critical thinking skills using the N-gain score on the pretest and posttest of students' critical thinking skills, which results in an increase between 0.66 and 1 in the medium and high categories. Then the data from the pre-test and post-test results were analysed using the normality test, which resulted in a pre-test significance value of 0.621 and a post-test significance value of 0.231, so the data was normally distributed because the significance value > 0.05. Furthermore, it was tested using the paired samples t-test, which obtained a significance value of 0.000 < 0.05, which showed a significant difference between the pretest and posttest scores in students' critical thinking abilitie. Based on these results, it can be concluded that the E-Worksheet using liveworksheet oriented problem based learning can be used to train students' critical thinking abilities on acid-base topics.