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All Journal Scientia Causa: Journal of Contemporary Pedagogy and Learning Science
Shavira Salsabila
Universitas Pendidikan Indonesia

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Project-Based Learning as a Catalyst for Enhancing 21st-Century Skills in Secondary Education Alya Nabila Adistia; Shavira Salsabila; Ismaul Fitroh; Achmad Afif Fikri; Muhammad Zia Alghar
Journal of Contemporary Pedagogy and Learning Science Vol. 1 No. 1 (2026): :February:Scientia Causa: Journal of Contemporary Pedagogy and Learning Science
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/7y8kxp21

Abstract

This study examined the effectiveness of Project-Based Learning (PBL) in enhancing secondary students’ 21st-century skills using a quasi-experimental mixed-methods design. Participants were Grade 10–11 students from two comparable public schools, with intact classrooms assigned to a PBL condition or conventional instruction. Quantitative data were collected through pre-test and post-test measures of critical thinking, creativity, collaboration, communication, and self-regulation, while qualitative evidence was obtained from classroom observations, reflective journals, and semi-structured interviews. Statistical analyses indicated significantly higher post-test gains in the PBL group, with effect sizes suggesting meaningful educational impact across multiple skill domains. The qualitative strand revealed that skill growth was mediated by scaffolding practices, authentic task structures, iterative revision cycles, and group accountability mechanisms. Transferability and sustainability outcomes were strongest when assessment criteria valued process indicators and when projects were connected to real-world issues. The integration of findings suggests that PBL supports equitable skill development by providing multiple participation pathways for diverse learners. Implications for curriculum and teacher development are discussed.
Co-Authors Achmad Afif Fikri Alya Nabila Adistia Ismaul Fitroh Muhammad Zia Alghar