Effectiveness and Relevance of the GASING Method in Improving 21st Century Competencies: A Systematic Review from a Philosophical-Pedagogical Perspective

The GASING method (Easy, Fun, and Enjoyable) is a mathematical pedagogical framework designed to promote deep and enjoyable understanding of concepts at various levels of education. Despite its wide application in various educational contexts, empirical investigations that rigorously assess its effectiveness and relevance from a philosophical and pedagogical point of view are still very rare. This research aims to examine the effectiveness and relevance of the GASING method using systematic review analysis from a pedagogical philosophical perspective, and evaluate its alignment with the principles of 21st century skills. This research method uses a Systematic Literature Review (SLR) which is informed by PRISMA guidelines, including identification, selection and analysis of a sample of 15 articles published between 2020 and 2025 from the Eric, DOAJ, Google Scholar and Garuda databases. Research findings show that the GASING method positively improves students' mathematics achievement and their interest in learning, as well as stimulating active and constructive learning. Philosophically, the superior principles of the GASING method are in line with the constructivism and humanistic pedagogical paradigms, which prioritize meaning, context and interpersonal relationships in the learning framework. The conclusions that can be drawn from this research confirm that the GASING method is not only pedagogically effective but also philosophically relevant in the modern educational landscape.