Saenla, A. and Kota, N. 2024. The Development of Learning Activities based on 4 MAT to the Academic Achievement and Critical Thinking on Product and Service-Learning Units for Prathomsuksa 2 Students. Interdisciplinary Academic and Research Journal . 4, 2 (Apr. 2024), 563–578. DOI:https://doi.org/10.60027/iarj.2024.274528.