VALIDITAS LKPD “PERUBAHAN LINGKUNGAN” BERBASIS CONTEXTUAL TEACHING AND LEARNING (CTL) UNTUK MELATIHKAN KETERAMPILAN PROSES SAINS PESERTA DIDIK KELAS X SMA

VALIDITY OF STUDENT WORKSHEET “ENVIRONMENTAL CHANGE” BASED ON CONTEXTUAL TEACHING AND LEARNING (CTL) TO TRAIN SKILLS OF SCIENCE PROCESSES OF STUDENTS IN CLASS X SENIOR HIGH SCHOOL

Materi perubahan lingkungan merupakan materi bersifat konstektual yang mengkaji tentang permasalahan lingkungan serta berhubungan langsung dengan kehidupan sehari-hari sehingga perlu dilakukan pembelajaran dengan menggunakan pendekatan CTL. CTL merupakan pendekatan pembelajaran yang holistik dan bertujuan membantu peserta didik untuk memahami makna materi ajar dan mengkaitkannya dengan konteks kehidupan sehari-hari sehingga diharapkan dapat mengajukan gagasan pemecahan masalah yang bertumpu pada proses ilmiah. Proses ilmiah dapat diajarkan dengan melatihkan keterampilan proses sains. Penelitian ini bertujuan untuk mendiskripsikan validitas LKPD “Perubahan Lingkungan” berbasis Contextual Teaching and Learning (CTL) untuk melatihkan keterampilan proses sains peserta didik kelas X SMA berdasarkan penilaian oleh dosen ahli pendidikan, dosen ahli materi dan guru biologi. Jenis penelitian ini mengikuti model 4D (pendefinisian, perancangan, pengembangan, dan penyebaran) yang terbatas sampai tahap pengembangan. Penyusunan LKPD memuat 4 syarat validitas yaitu syarat teknis, syarat didaktik, syarat konstruksi dan karakteristik LKPD. Hasil validitas LKPD yang dikembangkan berdasarkan skor syarat teknis 4, syarat didaktik 3,89, syarat konstruksi 3,78 dan karakteristik LKPD 3,89, sehingga skor keseluruhan aspek sejumlah 3,89 dengan kategori sangat valid, sehingga pengembangan LKPD “Perubahan Lingkungan” berbasis CTL untuk melatihkan keterampilan proses sains peserta didik kelas X SMA dinyatakan layak secara teoritis ditinjau dari aspek kevalidan.

Kata Kunci: Validitas LKPD, LKPD, CTL, Keterampilan Proses Sains, Perubahan Lingkungan

Environmental change is a contextual material that examines environmental issues and directly related to daily life so needs using the Contextual Teaching and Learning (CTL) approach. CTL is a holistic learning approach and objective to help students to understand the mean of teaching material and relate it to the context of daily life so that it is expected to submit problem solving ideas that are based on the scientific process. Scientific processes can be taught by train science process skills. This study objective to describe the validity of student worksheet "Environmental Change" based on Contextual Teaching and Learning (CTL) to train the science process skills of class X high school students based on assessments by educational expert lecturers, material expert lecturers and biology teachers. This type of research uses a 4D development model (define, design, develop, and disseminate) which is limited only to the develop stage. Arranging of student worksheet contains 4 validity requirements namely technical requirements, didactic requirements, construction requirements and worksheet characteristics. The results of the worksheet's validity were developed based on an technical requirements 4, didactic requirements 3.89, construction requirements 3.78 and worksheet characteristics 3.89, so that total score of 3.89 in the very valid category, so that the development of student worksheet "Environmental Change" based on Contextual Teaching and Learning (CTL) to train the science process skills of class X high school students was declared theoretically eligible in terms of validity aspects.

Keywords: LKPD validity, Student Worksheet, CTL, Science Process Skills, Environmental Change