ชมภู บ. Comparisons of Learning Achievements, Analytical Thinking Abilities, Satisfaction with Learning and Teaching, and Learning Retention in the Mathematics Learning Strand Entitled Trigonometrical Ratios of Matthayomsueksa 4 Students Using Courseware Geometer’s Sketchpad Approach (CGS) and the Conventional Teaching Approach. Academic Journal of Thailand National Sports University, Chonburi, Thailand, v. 2, n. 1, p. 155–165, 2010. Disponível em: https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/252168. Acesso em: 18 sep. 2026.