“REFLECTIVE TEACHING DESIGN AND CASE ANALYSIS OF MATHEMATICS PROPOSITION COURSE IN MIDDLE SCHOOL—TAKE THE DECISION OF CONGRUENT TRIANGLE AS AN EXAMPLE ”. JOURNAL OF SONGKE MATH 6, no. 1 (August 12, 2023): 12–19. Accessed July 30, 2026. https://jurnal.unikastpaulus.ac.id/index.php/JSM/article/view/1675.