Plasom P, Passago S. Learning Management with Concept Mapping on Digestive System to Enhance Systems Thinking and Learning Achievement for Grade 11th Students. Ratchaphruek [internet]. 2021 Dec. 9 [cited 2026 Aug. 26];19(3):62-71. available from: https://so05.tci-thaijo.org/index.php/Ratchaphruekjournal/article/view/251496