HAMID, M. A.; ALFI, C.; FATIH, M. Development of Tangram Media in Mathematics Learning Flat Built Materials to Improve Self Efficacy in Class 2 of Kendalrejo Negeri Srengat Primary School. Edumaspul: Jurnal Pendidikan, v. 8, n. 1, p. 2545-2554, 1 mar. 2024.