อุปทุม ว. The Comparison of Learning Achievement, Analytical Thinking and Attitudes toward Mathematics Entitled Ratio and Percentage of Matthayomsueksa 2 Students Between Using Constructivist Learning Activities and CIPPA Learning Activities. RMUTI Journal Humanities and Social Sciences, [S. l.], v. 2, n. 2, p. 24–36, 2015. Disponível em: https://so05.tci-thaijo.org/index.php/RMUTI_SS/article/view/195434. Acesso em: 3 may. 2024.