PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK BERBASIS INKUIRI TERBIMBING UNTUK MELATIH KETERAMPILAN PROSES SAINS PESERTA DIDIK PADA MATERI LAJU REAKSI 

DEVELOPMENT OF STUDENT WORKSHEETS BASED ON GUIDED INQUIRIES TO TRAIN STUDENTS' SCIENCE PROCESS SKILLS ON REACTION RATE MATERIALS

Penelitian ini bertujuan untuk mengetahui validitas, kepraktisan, dan keefektifan lembar kerja siswa berbasis inkuiri terbimbing untuk meningkatkan keterampilan proses sains siswa. Penelitian ini menggunakan metode penelitian Research and Development (R&D) hingga tahap uji coba produk dalam kelompok besar. Instrumen yang digunakan adalah lembar validasi, lembar aktivitas siswa, angket respon siswa, lembar pretest dan posttest domain kognitif. Penelitian ini diberikan kepada 36 siswa kelas 11 MIPA 4 SMA Negeri 1 Puri Kabupaten Mojokerto. Validitas lembar kerja siswa diperoleh dari penilaian 2 validator dari dosen kimia dan 2 validator dari guru kimia. Nilai validasi ditentukan dari median data penilaian 4 validator. Kepraktisan lembar kerja siswa diperoleh dari respon yang diberikan siswa dan aktivitas yang dilakukan siswa selama proses pembelajaran. Keefektifan lembar kerja siswa diperoleh dari hasil pretest dan posttest pada ranah kognitif. Hasil validasi yang diperoleh menunjukkan bahwa lembar kerja siswa dalam kategori cukup valid dan valid. Respon positif yang diberikan siswa terhadap lembar kerja siswa yang dikembangkan sebesar 98%. Selain itu pada saat pembelajaran berlangsung siswa melakukan kegiatan yang relevan sebesar 90,2%. Pretest-posttest menunjukkan bahwa data berdistribusi normal. Uji-t sampel berpasangan menunjukkan perbedaan hasil pretest-posttest, dan uji n-gain menunjukkan peningkatan pretest-posttest. lembar kerja siswa yang dikembangkan valid, praktis dan efektif untuk digunakan dalam pembelajaran kimia pada materi laju reaksi dan dapat dilatih untuk meningkatkan keterampilan proses sains siswa.

Kata Kunci : Inkuiri Terbimbing, Keterampilan Proses Sains, Materi Laju Reaksi

This study aims to determine the validity, practicality, and effectiveness of guided inquiry based student worksheets to improve students' science process skills. The research uses Research and Development (R&D) research methods until the product trial stage in large groups. The instruments used were validation sheets, student activity sheets, student response questionnaires, pretest and posttest sheets for the cognitive domain. This research was given to 36 students of grade 11 MIPA 4 SMA Negeri 1 Puri, Mojokerto Regency. The validity of the student worksheets was obtained from the assessment of 2 validators from chemistry lecturers  and 2 validators from chemistry teachers. Validation value is determined from the assessment data median of 4 validators. The practicality of student worksheets is obtained from the responses given by students and the activities carried out by students during the learning process. The effectiveness of the student worksheets obtained from the results of the pretest and posttest in the cognitive domain. The validation results obtained showed that the student worksheets in the category are quite valid and valid.  The positive response given by students to the developed student worksheets was 98%. In addition, when learning takes place, students carry out activities that are relevant to 90,2%. Pretest-posttest shows that the data is normally distributed. Paired sample t-test showed differences in the results of pretest-posttest, and n-gain test showed an increase in pretest-posttest. The worksheets developed are valid, practical and effective for use in learning chemistry on the material of reaction rate and can be trained to improve students' science process skills.

Keywords: Guided Inquiry, Science  Process Skills, Reaction  Rate Materials