THE USE OF THE CONCRETE-PICTORIAL-ABSTRACT (CPA) APPROACH TO ASSIST SECOND-GRADE STUDENTS IN UNDERSTANDING ADDITION AND SUBTRACTION AT SDN 1 BANYU URIP. Education, Teaching and Learning [Internet]. 2026 Oct. 27 [cited 2026 Nov. 8];:86-92. Available from: https://jose.sinarlima.com/index.php/joetal/article/view/162