ธราพร ฌ. Development of Science Activities for Primary Level to Promote Decision Making Skills Using Simon’s Theory of Rationality. edjour_stou [internet]. 2018 Dec. 28 [cited 2026 Sep. 24];11(2):171-82. available from: https://so05.tci-thaijo.org/index.php/edjour_stou/article/view/162000