นาถาดทอง ช, สุกใส ช, ไชยณรงค์ ป. Learning Elements Affecting an Achievement of Mathematics Learning of the Lower High School Students under Ubon Ratchathani Municipality. ubonreseva [internet]. 2021 Aug. 28 [cited 2026 Oct. 3];4(2):98-104. available from: https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/250993