Thrithron, C. and Khota, N. 2026. A Study of Learning Achievement and Teamwork in the “Sufficiency Economy” Learning Unit of Grade 4 Students Using the Cooperative Learning Management Technique: Teams-Games-Tournament (TGT). Interdisciplinary Academic and Research Journal . 6, 5 (Sep. 2026), e295535 . DOI:https://doi.org/10.60027/iarj.2026.e295535.