Innovating the LANTAN Model: A Solution for Enhancing Elementary School Students' Critical Thinking and Collaboration Skills
conceptual understanding, passive student participation, and a lack of critical thinking and collaboration skills due to conventional, teacher-centered instructional methods. This study aims to evaluate the effectiveness of an innovative variation of the "LANTAN" model—a hybrid integration of Problem-Based Learning (PBL), Numbered Heads Together (NHT), and Teams Games Tournament (TGT)—focusing on the geometric shapes topic. Utilizing Classroom Action Research (CAR) based on the Kemmis and McTaggart model, this study was conducted across two cycles (comprising four sessions) and involved 11 fourth-grade students as subjects. Data were collected through test and non-test techniques and subsequently analyzed using comparative descriptive statistics. The findings revealed a significant, linear improvement in every session. By the end of Cycle II, the teacher's activity score achieved a perfect score of 36, categorized as "Excellent." Correspondingly, classical mastery of student activities, critical thinking skills, collaboration skills, and individual cognitive learning outcomes drastically surged to a perfect 100%. In conclusion, the implementation of the innovative LANTAN model is proven to be highly effective in enhancing both the quality of the learning process and the mathematics learning outcomes in elementary education.