Pengembangan e-LKPD Berorientasi Inkuiri Terbimbing untuk Melatihkan Keterampilan Berpikir Kritis Peserta Didik pada Materi Larutan Penyangga 

Development of e-Worksheet Guided Inquiry-Oriented to Train Students Critical Thinking Skills on Buffer Solution Material 

Tujuan penelitian adalah menghasilkan e-LKPD yang layak untuk melatihkan keterampilan berpikir kritis peserta didik. Penelitian merupakan penelitian pengembangan menggunakan model ADDIE. Desain penelitian merupakan One Group Pretest-Posttest Design. Kelayakan e-LKPD mengacu kepada tiga kriteria yaitu valid, praktis, dan efektif. Validitas terdiri dari validitas isi dan validitas konstruk. Data validitas diperoleh dari penilaian expert melalui expert judgement. Hasil penilaian validitas menyatakan bahwa e-LKPD yang dikembangkan telah memenuhi validitas isi dan konstruk pada semua aspek. Data kepraktisan dan keefektifan diperoleh pada saat pilot test. Data kepraktisan diperoleh dari hasil observasi aktivitas fisik dan nonfisik serta angket respon peserta didik. Hasil observasi aktivitas dan angket respon peserta didik menunjukkan bahwa e-LKPD yang dikembangkan telah memenuhi kriteria praktis. Data keefektifan diperoleh dari hasil pretest dan posttest keterampilan berpikir kritis peserta didik. Hasil tes menunjukkan bahwa e-LKPD yang dikembangkan telah memenuhi kriteria efektif.

Kata kunci: keterampilan berpikir kritis, kelayakan, e-LKPD, larutan penyangga. 

The purpose of the study was to produce a feasible e-LKPD to train students' critical thinking skills. The research is development research using the ADDIE model. The research design was a one-group pretest-posttest design. The feasibility of e-LKPD refers to three criteria: validity, practicality, and effectiveness. Validity consists of content validity and construct validity. The validity data was obtained from expert assessment through expert judgment. The results of the validity assessment stated that the e-LKPD developed had met the content and construct validity requirements in all aspects. Practicality and effectiveness data were obtained during the pilot test. Practicality data was obtained from the results of observations of physical and non-physical activities and student response questionnaires. The results of activity observations and learner response questionnaires show that the e-LKPD developed has met the practical criteria. Effectiveness data was obtained from the pretest and posttest results of students' critical thinking skills. The test results show that the developed e-LKPD has met the effective criteria.

Keywords: critical thinking skills, feasibility, e-LKPD, buffer solution.