Kanesri S, Chueasathuchon C, Chueasathuchon C. Some Variables Related to Mathematics Achievement for the Eighth Grade Students at Opportunity Expansion Schools under Ubon Ratchathani Primary Educational Service Area Office 1. ubonreseva [internet]. 2019 Dec. 31 [cited 2026 Oct. 4];8(2):92-102. available from: https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/196925