สุขสำราญ เ. The Effect of Using a Guidance Activities Package with Brainstorming Technique to Develop Creative Problem Solving Ability of Phathom Suksa II Students of Thessaban 4 ( Udomwitsomjai) School in Prachin Buri Province. edjour_stou [internet]. 2018 Dec. 28 [cited 2026 Sep. 30];11(2):43-55. available from: https://so05.tci-thaijo.org/index.php/edjour_stou/article/view/160356