DEVELOPMENT OF ADDITION AND SUBTRACTION BOARD MEDIA (PAPEPENG) FOR 1ST GRADE ELEMENTARY SCHOOL STUDENTS. Journal of Global Innovations in Primary Teacher Education, [S. l.], v. 1, n. 1, p. 7–13, 2026. Disponível em: https://jurnal.educatech.id/index.php/jgipte/article/view/62.. Acesso em: 7 jun. 2026.