PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK PADA MATERI GETARAN DAN GELOMBANG UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS SISWA SMP WIDYA DHARMA SURABAYA

THE DEVELOPMENT OF STUDENT WORKSHEETS ON VIBRATION AND WAVES MATERIALS TO IMPROVE STUDENTS' SCIENCE PROCESS SKILLS AT WIDYA DHARMA JUNIOR HIGH SCHOOL SURABAYA

Penelitian dilakukan dengan tujuan untuk mendeskripsikan kelayakan lembar kerja peserta didik yang dikembangkan berdasarakan kelayakan teoritis dan empiris. Kelayakan teoritis ditinjau dari kevalidan serta kelayakan empiris ditinjau dari kepraktisan yaitu keterlaksanaan pembelajaran dan respons siswa, keefektifan yaitu aktivitas siswa dan peningkatan keterampilan proses sains.            Penelitian ini mengacu pada model pengembangan 4-D (four D-Models). Model pengembangan 4-D terdirixatas empat tahap utamaxyaitu, tahap definex(pendefinisian), designx(perancangan), dan disseminate (penyebaran),xnamun pada penelitianxini tahap disseminatextidak dilakukan. Uji coba produk dilakukan dengan menggunakan One Group Pretest-Posttest Design dengan subjek uji coba di SMP Widya Dharma Surabaya kelas VIII-A yang terdiri dari 16 siswa. Hasil penelitian menunjukkan bahwa lembar kerja peseta didik yang dikembangkan dinyatakan layak berdasarkan kevalidan, kepraktisan, dan keefektifan. Kelayakan berdasarkan kevalidan mendapatkan skor modus keseluruhan dengan angka modus yaitu 5 sehingga mendapat kriteria sangat baik. Kelayakan berdasarkan kepraktisan diperoleh dari keterlaksanaan pembelajaran dengan skor modus keseluruhan dengan angka modus yaitu 4 sehingga mendapakan kriteria baik dan persentase respons siswa terhadap lembar kerja peserta didik sebesar 96,6%, dengan kriteria sangat baik. Kelayakan berdasarkan kefektifan diperoleh dari aktivitas siswa dengan skor modus keseluruhan dengan angka modus yaitu 4 sehingga mendapakan kriteria baik dan peningkatan keterampilan proses sains siswa dengan n-Gain sebesar 0,7 dengan kriteria tinggi, serta peningkatan keterampilan proses sains setiap aspek dengan n-Gain sebesar 0,7 dengan kriteria tinggi. Hasil ketiga aspek tersebut dapat disimpulkan bahwa LKPD yang dikembangkan dapat dikatakan layak untuk digunakan.

Kata Kunci: Lembar Kerja Peserta Didik, Keterampilan Proses Sains,  kevalidan, kepraktisan, keefektifan.

The research was conducted to describe the feasibility of students' worksheets based on theoretical and empirical feasibility. Theoretical feasibility assessed by the validity while empirical feasibility assessed by practicability, which are implementation and student responses, and the effectiveness which are students' activity and improvement of science process skills. This study refers to the 4-D development model (four D models). The 4D development model consists of four main stages which were the define, design, and disseminate stages, but in this study the disseminate stage was not carried out. The trial of this product was carried out using One Group Pretest-Posttest Design on 16 students of VIII-A at SMP Widya Dharma Surabaya. The results showed that the developed students' worksheets were declared to be feasible based on validity, practicality, and effectiveness. the Eligibility based on validity had the mode of 5, which was very good criteria. The Eligibility based on practicality is obtained from the implementation of learning had the mode of 4, which was good criteria and the percentage of students' responses to the worksheet was 96.6%, with very good criteria. The Eligibility based on effectiveness is obtained from student activities that had the mode of 4, which has good criteria and students' science process skills was increased with the n-Gain score of 0.7 with high criteria, as well as the improvement of each science process skills aspect with n-Gain of 0.7 with high criteria. The results of these three aspects can be concluded that the students' worksheets were feasible.