มวลสุข อ, สุกใส ช, ไชยณรงค์ ป. The Development of Mathematics Instruction Package : Real Number for Mathayom Suksa 4. ubonreseva [internet]. 2021 Aug. 28 [cited 2026 Oct. 3];4(2):105-14. available from: https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/250994