Donna, Baiq Puja, Muhammad Turmuzi, and Junaidi Junaidi. 2020. “The The Influence of Discovery Learning Model Based on Visual Media on The Ability to Understand The Relation and Functions Subject for Students in VIII Grade”. Jurnal Ilmiah Pendidikan Indonesia 2 (2). https://jipi.unram.ac.id/index.php/jipi/article/view/210.