1.
Phiwkham T, Thienyutthakul S. A Study of Mathematical Learning Achievement on Problems Including Addition, Subtraction, Multiplication, Division of Fractions and Mixed Numbers by Using the STAD Cooperative Learning Management with Skill Exercises of Grade 5 Students. J. EDU. YRU [internet]. 2024 Dec. 30 [cited 2026 Sep. 11];3(2):99-110. available from: https://so08.tci-thaijo.org/index.php/jeduyru/article/view/2796