Ruangjarat P, Khanthaket S, Phichayapirat P. Development of a Learning Activity Management Package by Using the STAR Strategy in Conjunction with Active Learning Affecting Ability in Solving Mathematical Problems on Statistics for the 8th Grade Students. Pitchayatat [Internet]. 2021 Dec. 15 [cited 2024 May 2];16(3):247-5. Available from: https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/251578