Seher MANDACI ŞAHİN, Mustafa ÇALIŞKAN. THE EFFECT OF GAMES AND ACTIVITIES ON ROUNDING AND PREDICTION SUBJECT IN SECOND GRADE MATHEMATICS LESSON. IJOESS [Internet]. 2019 Dec. 1 [cited 2025 Sep. 3];10(38):1059-80. Available from: https://rrpubs.com/index.php/ijoess/article/view/1221