DEVELOPMENT of (LKPD) DISCOVERY LEARNING-BASED FOR CLASS X SCIENCE STUDENTS OF ENVIRONMENTAL POLLUTION MATERIAL

This research is based on Discovery Learning on environmental pollution material and aims to produce Student Worksheets to determine the feasibility test. This feasibility was tested by media experts and material experts, as well as by teachers and students. This type of research is based on the research and development (R&D) improvement of the ADDIE research model. The research sample amounted to 36 students. The instruments used are media and material validation questionnaires, student response questionnaires and teacher response questionnaires, and the feasibility of discover learning-based Student Worksheets based on pretest and posttest. The data analysis technique of this research is quantitative and qualitative. The validation results found that the development of this Student Worksheet was at the stage of the feasibility of the Student Worksheet material with an average of 82.00% of the most appropriate definition criteria and media experts assessed an average of 88.00% of the average percentage of the most probable criteria. Discovery learning based on the teacher's response to environmental pollution, the importance of the Student Worksheet is 82.75% with very interesting conditions. The level of validity assessed by the teacher on this Student Worksheet is obtained by a percentage of 90.00% which is stated to be very practical. And lastly, the results of the pretest and posttest showed that it was 0.74 where this number indicates that the two tests are stated to be very practical. With the average achievement of the pretest getting an average value of 8.92 while the average posttest score getting an increase of 9.72, therefore with the test questions it was found that students experienced an increase in knowledge after using the Participant Worksheet. Discovery Learning-based students on environmental pollution materialPenelitian ini bertujuan untuk menghasilkan LKPD berbasis Discovery Learning pada materi pencemaran lingkungan dan untuk mengetahui uji kelayakan. Kelayakan ini di uji melalui dosen validasi ahli media dan ahli materi serta menurut guru dan peserta didik. Jenis penelitian ini adalah Research and Development (R&D) dengan memodifikasi menjadi model penelitian ADDIE. Sampel penelitian berjumlah 36 peserta didik. Instumen yang digunakan adalah angket validasi media dan materi, angket repon peserta didik dan angket repon guru, serta kelayakan LKPD berbasis discover learning berdasarkan pretest dan posttets. Teknik analisis data penelitian ini adalah kuantitatif dan kualitatif. Hasil validasi diperoleh pengembangan LKPD berbasis discovery learning pada materi pencemaran lingkungan pada tingkat kelayakan materi LKPD memperoleh rata-rata sebesar 82% dengan kriteria interpretasi sangat layak dan ahli media memberikan penilaian dengan persentase rata-rata sebesar 88% dengan kriteria sangat layak. Tingkat kemenarikan LKPD berbasis Discovery Learning pada materi Pencemaran Lingkungan berdasarkan respon pendidik adalah sebesar 82,75% dengan kriteria sangat menarik. Tingkat kevalidan yang di nilai oleh guru terhadap LKPD berbasis Discovery Learning pada materi Pencemaran Lingkungan di dapatkan hasil pesentase sebesar 90% yang di nyatakan sangat praktis. Dan terakhir hasil tes pretetst dan posttest menunjukan hasil bahwa 0,74 dimana angka ini menunjukkan bahwa kedua test tersebut dinyatakan sangat praktis. Dengan capaian rata-rata yaitu pretets mendapatkan rata-rata nilai sebesar 8,92 sedangkan rata-rata nilai posttest mendapatkan peningkatan yaitu 9.72, oleh karena itu dengan adanya uji soal tersebut di dapatkan hasil bahwa peserta didik mengalami peningkatan pengetahuan setelah di gunakannya LKPD berbasis Discovery Learning pada materi pencemaran lingkungan