Chaiyo T, Hemvong W. The Development of Mathematics Learning Activities on Addition and Subtraction of Counting Number No More Than 20 By Using Inductive or Deductive Teaching Supplemented with Cartoon Exercise Emphasize Polya Problem Solving Process of Prathomsuksa 1 Student. JMCTMCU [internet]. 2026 Feb. 8 [cited 2026 Sep. 11];6(2):12-23. available from: https://so02.tci-thaijo.org/index.php/mcupnpbcr/article/view/284852