Hidayat, A., Hadi, S. and Darmiyati (2020) “Development of Cognitive Aspects of Children in Matching Numbers with Number Symbols using a Combination of Demonstration, Make a Match Models Assisted by Audio Visual Media”, Journal of K6 Education and Management, 2(2), pp. 133-138. doi: 10.11594/jk6em.02.02.08.