หวังโสม อ.; เลิศอมรพงษ์ ช.; สมใจเพ็ง ต. EFFECTS OF LEARNING ACTIVITIES ON CONGRUENCE, BASED ON TEACHING PROCEDURE OF VAN HIELE BY USING THE GEOMETER’S SKETCHPAD (GSP). Journal of Humanities and Social Sciences Thonburi University, [S. l.], v. 12, n. 29, p. 206–216, 2018. Disponível em: https://so03.tci-thaijo.org/index.php/trujournal/article/view/148711. Acesso em: 28 apr. 2024.