Anuniwat D, Pamuta K, Changsri N. Students’ Mathematical Ideas in Problem-Solving Mathematics Classrooms: A Case Study of Circle Area Application. Ratchaphruek [internet]. 2025 Aug. 14 [cited 2026 Aug. 26];23(2):84-98. available from: https://so05.tci-thaijo.org/index.php/Ratchaphruekjournal/article/view/279436