VALIDITAS LKPD “PENCEMARAN LINGKUNGAN” BERBASIS CONTEXTUAL TEACHING AND LEARNING (CTL) UNTUK MELATIHKAN KETERAMPILAN BERPIKIR KRITIS 

THE VALIDITY OF STUDENT WORKSHEET “ENVIRONMENTAL POLLUTION” BASED ON CONTEXTUAL TEACHING AND LEARNING (CTL) TO TRAIN CRITICAL THINKING SKILL

Keterampilan berpikir kritis adalah salah satu keterampilan yang penting untuk bersaing pada abad ke-21. Keterampilan berpikir kritis dapat dilatihkan dengan LKPD berbasis Contextual Teaching and Learning (CTL). Materi yang diterapkan pada LKPD berbasis Contextual Teaching and Learning (CTL) merupakan materi“pencemaran lingkungan karena berhubungan dengan peristiwa yang terjadi dalam kehidupan sehari-hari. Tujuan dari penelitian ini yaitu untuk mendeskripsikan validitas LKPD “Pencemaran Lingkungan” berbasis Contextual Teaching and Learning (CTL) untuk melatihkan keterampilan berpikir kritis peserta didik berdasarkan penilaian oleh dua dosen biologi dan satu guru biologi. Jenis penelitian ini menggunakan model pengembangan 4-D yaitu Define, Design, Develop tanpa Disseminate. Penyusunan LKPD memuat 5 komponen yaitu komponen isi, penyajian, kebahasaan, kesesuain dengan pembelajaran CTL, dan LKPD melatihkan keterampilan berpikir kritis. Hasil validitas menunjukkan bahwa LKPD “Pencemaran Lingkungan” berbasis Contextual Teaching and Learning (CTL) memperoleh persentase sebesar 97,8% dengan kriteria sangat valid.

Kata kunci: Validitas, LKPD, CTL, Berpikir Kritis, Pencemaran Lingkungan.

Critical thinking skill is one of the important skill to compete in the 21^st century. Critical thinking skill can be trained by student worksheet based on Contextual Teaching and Learning (CTL). The material applied to the Contextual Teaching and Learning (CTL) based on student worksheet is environmental pollution material because it deals with events occur in daily life. The purpose of this study is to describe the validity of the student worksheet "Environmental Pollution" based on Contextual Teaching and Learning (CTL) to train students' critical thinking skill based on an assessment by two biology lecturers and a biology teacher. This type of research used a 4-D development model, namely Define, Design, Develop without Disseminate. The preparation of student worksheet contains 5 components, namely content, presentation, linguistic, conformity to CTL learning, and student worksheet to train critical thinking skill. The validation results showed that the Student Worksheet "Environmental Pollution" based on Contextual Teaching and Learning (CTL) obtained a percentage 97.8% very valid criteria.

Keywords: Validity, Student Worksheet, Contextual Teaching and Learning, Critical Thinking, Environmental Pollution.