[1]
H. Ginting and E. Surya, “Development Learning Device Based for Measuring Contextual Critical Thinking Skills Students SD Class VI Mathematical”, IJSBAR, vol. 33, no. 3, pp. 301–310, Jun. 2017, Accessed: Jul. 09, 2026. [Online]. Available: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/7544