[1] T. Sugiarti, F. S. Hutama, K. C. Devi, K. Mahmudi, and A. A. Wardoyo, “PMR Application to increase Activity and Results of Learning about Reduction Additive Fractions in Elementary School,” IJELS, vol. 3, no. 6, pp. 1142–1146, 2018, doi: 10.22161/ijels.3.6.28.