R. Rusmini and E. Surya, “The Effect of Contextual Learning Approach to Mathematical Connection Ability and Student Self-Confidence Grade Viii Smp Negeri 8 Medan”, IJSBAR, vol. 35, no. 2, pp. 249–262, Aug. 2017, Accessed: Dec. 11, 2025. [Online]. Available: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/7933