Pengembangan Lembar Kerja Peserta Didik Berbasis Keterampilan Proses Sains pada Tema Hujan Asam Kelas VII SMP

The aim of this research was to examine the level validation of student worksheets based on science process skills with the theme of acid rain for class VII SMP. This research was an RnD (Research and development) research using a development model by Thiagarajan which was adapted into 3D (define, design and develop). The data collection instrument used was a questionnaire in the form of an assessment instrument for student worksheets. The assessment of the student worksheets consists of the feasibility of content, the feasibility of presentation, the feasibility of science process skills, the feasibility of language and the feasibility of graphics. The results of the assessment carried out by material expert validators, media expert validators and practitioner expert validators on student worksheets based on science process skills on the theme of acid rain for class VII junior high school, namely 90.27% for content feasibility, 92.7% for presentation feasibility, 90.62% for science process skills feasibility, 88.63% for language feasibility and 84,61 for graphics feasibility. So the percentage of the final score for the assessment of the student worksheets is 88.47% with very valid criteria, it means that the student worksheets is suitable for use in science learning.Penelitian bertujuan untuk menguji kevalidan lembar kerja peserta didik berbasis keterampilan proses sains pada tema hujan asam kelas VII SMP. Penelitian ini merupakan penelitian RnD (Research and development) dengan menggunakan model pengembangan oleh Thiagarajan yang diadaptasi menjadi 3D (define, design dan develop). Instrumen pengumpulan data yang digunakan adalah angket berupa instrumen penilaian lembar kerja peserta didik. Penilaian lembar kerja peserta didik terdiri atas kelayakan isi, kelayakan penyajian, kelayakan keterampilan proses sains, kelayakan bahasa dan kelayakan kegrafikan. Hasil penilaian yang dilakukan oleh validator ahli materi, validator ahli media dan validator ahli praktisi pada lembar kerja peserta didik berbasis keterampilan proses sains pada tema hujan asam kelas VII SMP yaitu diperoleh nilai 90,27% untuk kelayakan isi, 92,7% untuk kelayakan penyajian, 90,62% untuk kelayakan keterampilan proses sains, 88,63% untuk kelayakan bahasa dan 84,61% untuk kelayakan kegrafikan. Sehingga persentase nilai akhir penilaian lembar kerja peserta didik adalah 88,47% dengan kriteria sangat valid, artinya LKPD sudah layak digunakan dalam pembelajaran IPA