Suksamran N, Siriwattananon N. Development of Skill Practice Exercises on Addition, Subtraction, Multiplication, and Division of Fractions to Enhance Learning Achievement of Grade 6 Students at Banlangkhao School. J.mul.res.soc.in [internet]. 2026 Aug. 25 [cited 2026 Sep. 18];2(2):61-7. available from: https://so10.tci-thaijo.org/index.php/MRSI/article/view/3412