THE EFFECT OF SKINNER’S LEARNING THEORY THROUGH PICTURE AND PICTURE MODEL ON MATHEMATIC COMPREHENSION ABILITY: Ibnu Hajar Mandiri Junior High School Conducting Research. Akademika [Internet]. 2021 Nov. 12 [cited 2026 Apr. 21];10(02):261-75. Available from: https://jurnal.uia.ac.id/akademika/article/view/1448