RACHAPAN, P.; LHAPEERAKUL, P.; SIRIWAT, K. The Development of a Learning Model Using the PPP Technique Integrated with the “Fun Mystery Box” to Enhance Motivation in Learning Chinese Among Grade 4/5 Students at Chongfah Xinsheng Wanishbamrung School. Vacana Journal, Chiang Rai, Thailand, v. 14, n. 1, p. e140107, 2026. Disponível em: https://so19.tci-thaijo.org/index.php/VacanaJournal/article/view/2457. Acesso em: 10 oct. 2026.