ว่องไว ล, นันทะศรี ว, เพ็งสวัสดิ์ ว. The Development of Mathematics Learning Management Model for Sixth Grade Students in Schools under Sakon Nakhon Primary Educational Service Area Office 1. J Roi Et [internet]. 2019 Dec. 24 [cited 2025 Apr. 26];13(3):29-36. available from: https://so03.tci-thaijo.org/index.php/reru/article/view/180340