Jelita Sirait, Lisbet Novianti Sihombing and Sukardo Sitohang 2023. The Influence of Letter Card Media on Learning Outcomes of Class 1 Students in Learning Theme 1 Myself Subtema 2 Me and New Friends at SDN 091277 Pematang Siantar. International Journal of Integrated Science and Technology. 1, 4 (Oct. 2023), 431–440. DOI:https://doi.org/10.59890/ijist.v1i4.635.