PENGEMBANGAN E-LKPD BERBASIS PROBLEM BASED LEARNING MATERI EKOSISTEM UNTUK MENINGKATKAN BERPIKIR KRITIS PESERTA DIDIK
DEVELOPMENT OF E-LKPD BASED ON PROBLEM BASED LEARNING ECOSYSTEM MATERIAL TO IMPROVE STUDENTS' CRITICAL THINKING
Abad 21 menuntut peserta didik untuk memiliki keterampilan 4C salah satunya keterampilan berpikir kritis. Berpikir kritis merupakan suatu kemampuan yang memungkinkan peserta didik untuk menganalisis dan menyatukan informasi untuk memecahkan masalah dalam cakupan tertentu. Model pembelajaran Problem Based Learning (PBL) dapat meningkatkan keterampilan berpikir kritis karena peserta didik dihadapkan pada masalah kehidupan nyata dari lingkungan seperti permasalahan mengenai ekosistem. Penelitian ini bertujuan untuk menghasilkan E-LKPD berbasis Problem Based Learning (PBL) materi ekosistem yang valid, praktis dan efektif untuk meningkatkan berpikir kritis. Pengembangan E-LKPD dilakukan menggunakan model 4D (define, design, develop dan dissimenate). Penelitian ini menggunakan parameter validitas, kepraktisan, dan keefektifan berupa lembar validasi, lembar keterlaksanaan, lembar angket respons peserta didik dan lembar pretest dan posttest. Uji coba penelitian ini dilaksanakan kepada 36 peserta didik kelas X di SMA Negeri 7 Surabaya. Hasil validitas yang ditinjau dari penilaian dua validator, menunjukkan hasil persentase keseluruhan aspek sebesar 98,70% dengan kriteria sangat valid. Kepraktisan E-LKPD ditinjau berdasarkan hasil observasi keterlaksanaan menunjukkan hasil persentase 100% dengan kriteria sangat praktis. Keefektifan E-LKPD ditinjau berdasarkan hasil angket respons peserta didik hasil persentase keseluruhan aspek sebesar 97,40% dan peningkatan keterampilan berpikir kritis dengan skor n-gain sebesar 0,72 dengan kriteria sangat efektif. Analisis sensitivitas butir soal menunjukkan bahwa seluruh butir soal sensitive.
Kata kunci: E-LKPD, Problem Based Learning (PBL), Keterampilan Berpikir Kritis, Ekosistem.
The 21st century demands students to possess 4C skills, one of which is critical thinking. Critical thinking is the ability that enables students to analyze and integrate information to solve problems within a specific context. The Problem-Based Learning (PBL) model can enhance critical thinking skills as it presents students with real-life issues from their environment, such as ecosystem-related problems. This study aims to develop a Problem Based Learning (PBL) based Electronic Student Worksheet (E-LKPD) on ecosystem topics that is valid, practical, and effective in improving critical thinking skills. The development of the E-LKPD follows the 4D model: Define, Design, Develop, and Disseminate. This research employed indicators of validity, practicality, and effectiveness using validation sheets, implementation observation sheets,student response questionnaires, and pretest-posttest sheets. The product was tested on 36 tenth-grade students at SMA Negeri 7 Surabaya. The validity results, assessed by two validators, showed an overall percentage of 98.70%, indicating a "very valid" criterion. The practicality, based on implementation observation, showed a percentage of 100%, categorized as "very practical." The effectiveness, based on student responses, reached 97.40%, with an increase in critical thinking skills shown by an n-gain score of 0.72, categorized as "highly effective." Sensitivity analysis of the test items indicated that all items were sensitive.
Key word: E-LKPD, Problem Based Learning (PBL), Critical Thinking, Skills, Ecosystem.