Almatius Setya Marsudi, Maria Pudji Lestari, & Nuzulul Hidayati. (2021). The Use of YouTube Social Media in the Covid19 Pandemic to Improve Understanding of Mathematical Concepts. Turkish Journal of Computer and Mathematics Education (TURCOMAT), 12(13), 6327–6333. https://doi.org/10.17762/turcomat.v12i13.9921