Pengaruh Penerapan LKPD Berbasis PjBL terhadap Keterampilan Berpikir Kritis dan Hasil Belajar Kognitif Siswa
DOI:
https://doi.org/10.36312/panthera.v6i3.1209Keywords:
Cognitive Learning Outcomes, Critical Thinking Skills, PjBL-based Student WorksheetAbstract
This pre-experimental study, utilizing a one-group pretest-posttest design, aimed to examine the validity and effectiveness of a Project-Based Learning (PjBL)-based Student Worksheet on the topic of environmental pollution regarding students' critical thinking skills and cognitive learning outcomes. The study population comprised all students at SMAN 8 Mataram, with class X MIPA 1 selected as the sample using a non-random sampling technique. Data were collected using instruments consisting of a critical thinking essay test (6 items), a cognitive multiple-choice test (12 items), and expert validation sheets. Data analysis employed Aiken’s V index for validity and the N-Gain formula to measure competency improvement. The results indicated that all materials fell into the "highly valid" category, with average Aiken's V indices of 0.89 (teaching module), 0.76 (LKPD), 0.87 (critical thinking test), and 0.89 (cognitive test). The implementation of the PjBL-based LKPD proved sufficiently effective in enhancing student abilities, as evidenced by N-Gain scores of 0.57 for critical thinking skills (57.55% effectiveness) and 0.56 for cognitive learning outcomes (56.20% effectiveness). Integrating PjBL syntax into this LKPD effectively facilitated independent thinking and students' mastery of essential concepts.
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