Validitas Lembar Kegiatan Peserta Didik (LKPD) Berbasis Guided Discovery Materi Transpor Membran untuk Melatihkan Keterampilan Proses Sains Kelas XI SMA

Validity of Guided Discovery-based Student Worksheet in Membrane Transport to Train Science Process of 11th Grade Senior High School Students

Keterampilan proses sains berkaitan erat dengan kegiatan penelitian. Pengembangan keterampilan proses sains penting bagi peserta didik agar dapat memahami serta mengembangkan ide dan konsep yang belum diketahui serta memungkinkan untuk menemukan konsep secara mandiri. Lembar Kegiatan Peserta Didik (LKPD) berbasis guided discovery berisi kegiatan percobaan transpor membran yang berhubungan dengan pengalaman sehari-hari untuk melatihkan keterampilan proses sains peserta didik. Penelitian ini dilakukan dengan tujuan untuk mendeskripsikan validitas lembar kegiatan peserta didik berbasis guided discovery pada materi transpor membran sehingga dapat melatihkan keterampilan proses sains kelas XI SMA. Penelitian ini dilakukan menggunakan model penelitian pengembangan 4D (four-D models) dengan tahapan define, design, develop tanpa disseminate. Validitas LKPD diukur berdasarkan kelayakan penyajian (teknis), kelayakan isi (didaktik), kelayakan kebahasaan (konstruksi), kesesuaian dengan komponen guded discovery, serta kesesuaian dengan pencapaian tujuan melatihkan keterampilan proses sains. Validitas LKPD ditentukan berdasarkan hasil validasi oleh dua dosen ahli dan satu guru biologi. Hasil validasi berdasarkan kelayakan penyajian memperoleh skor 3,9; kelayakan isi dengan skor 3,67; kelayakan bahasa dengan skor 4; keterkaitan dengan langkah pembelajaran guided discovery memperoleh skor 3,8; dan kesesuaian dengan indikator keterampilan proses sains memperoleh skor 3,53. Secara keseluruhan, hasil validasi LKPD memperoleh skor rata-rata 3,78 sehingga dikategorikan sangat valid. Dengan demikian, LKPD berbasis guided discovery yang dikembangkan telah memenuhi aspek-aspek penilaian LKPD dan dapat digunakan dalam pembelajaran yang melatihkan keterampilan proses sains.

Science process are the skills most often used in researches. Science process skill is important for studenst to understand and improve an idea and concept they haven’t understood, and enable them to discover a concept independently. Student worksheet based on guided discovery contains activity on studying membrane transport in daily life, which can be used to train science process skills of students. The aim of this study was to describe the validity guided discovery-based student worksheet in membrane transport to train  science process skills of students in 11^th grade of senior high school. Worksheet was developed based on four-D models using define, design, develop stages, without  disseminate. The student worksheet’s validity was measured based on  eligibility of presentation, content, language, compatibility with components of guided discovery, and achieving  goal to train science process skills. The validity of student worksheet was determined based on the validation result of two experst and a biology teacher. The validation result, based on eligibility of presentation obtained a score of 3,9; the contents requirement with score 3,67; language requirement with score 4; the compatibility with components of guided discovery get score 3,53  The overall validity score of the student worksheet was 3.78 categorized as highly valid. Therefore, guided discovery-based student worksheet was fulfilled student worksheet assessment aspects and can be used to train science process skills.