น่วมอยู่ ว.; ณ สงขลา ใ. A DEVELOPMENT OF INSTRUCTIONAL PACKAGE OF MECHANICAL WITH DESIGN PROCESS TO ENHANCE SYSTEM THINKING OF ELEMENTARY SCHOOL STUDENTS. ECT Education and Communication Technology Journal , [S. l.], v. 15, n. 18, p. 1–11, 2020. Disponível em: https://so01.tci-thaijo.org/index.php/ectstou/article/view/228394. Acesso em: 15 sep. 2026.