PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) GUIDED DISCOVERY BERBANTU MEDIA PhET SIMULASI MATERI EKSPRESI GEN UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS TERINTEGRASI PESERTA DIDIK KELAS XII

DEVELOPMENT OF GUIDED DISCOVERY WORKSHEETS USING PhET MEDIA ON GENE EXPRESSION MATERIAL SIMULATION TO IMPROVE INTEGRATED SCIENCE PROCESS SKILLS OF GRADE XII STUDENTS

Keterampilan Proses Sains Terintegrasi (KPST) adalah kemampuan yang melibatkan serangkaian aktivitas ilmiah yang mengandalkan dasar-dasar keterampilan untuk membangun pengetahuan sekaligus memperdalam pemahaman melalui kegiatan investigasi. Penerapan model pembelajaran guided discovery dapat dimanfaatkan untuk memaksimalkan pengembangan KPST. Penelitian ini bertujuan menciptakan LKPD valid, praktis, dan efektif. LKPD yang dirancang berbantu laboratorium virtual berbasis simulasi PhET dengan materi ekspresi gen. Penelitian dilakukan dengan pendekatan pengembangan menggunakan model ADDIE, meliputi tahap analyze, design, development, implementation, dan evaluation. Teknik pengumpulan data terdiri dari lembar validasi LKPD, lembar observasi pelaksanaan LKPD, lembar tanggapan peserta didik, serta lembar soal pretest dan posttest. Validasi menunjukkan skor 3,85 yang menandakan LKPD sangat valid. Observasi pelaksanaan mendapatkan persentase 100%, sehingga tergolong sangat praktis. Respon positif yang diberikan peserta didik terhadap LKPD sebesar 94,53% termasuk kategori sangat praktis. Peningkatan KPST terlihat dari nilai N-gain sebesar 0,89 yang termasuk dalam kategori tinggi. Indikator KPST mencapai 58,07% pada pre-test dan meningkat menjadi 94,60% pada post-test. Kesimpulannya LKPD guided discovery dengan berbantu simulasi PhET yang dikembangkan terbukti valid, praktis, dan efektif.

Kata Kunci: LKPD, guided discovery, PhET simulasi, KPST, SMA.

Integrated Science Process Skills (KPST) refer to the capability to perform a sequence of scientific procedures that utilize fundamental skills to construct knowledge and deepen understanding through investigative activities. The guided discovery learning model can be applied to enhance the development of KPST. This study aimed to create a valid, practical, and effective worksheets. The worksheets was developed with the assistance of a virtual laboratory, specifically the PhET simulation focused on gene expression material. This research is a development study following the ADDIE model, which includes analysis, design, development, implementation, and evaluation phases. Data collection methods involved worksheets validation sheets, worksheets implementation observation sheets, peserta didik response sheets, and pretest-posttest assessments. Validation results indicated that the developed worksheets scored 3.85, categorizing it as very valid. Observations during worksheets implementation revealed a 100% execution rate, rated as highly practical. The positive responses from peserta didik toward the worksheets reached 94.53%, falling within the very practical category. Integrated science process skills showed improvement, with an N-gain value of 0.89, classified as high. KPST indicators achieved 58.07% in the pre-test and increased to 94.60% in the post-test. Based on these findings, it can be concluded that the guided discovery worksheets aided by the PhET simulation is valid, practical, and effective.

Keywords: Worksheets, guided discovery, PhET simulation, KPST, high school.