Wardana, H.A., Hartono, H. and Sri Susilogati Sumarti, S.S.S. 2019. Model of Problem Based Learning Assisted with Multimedia Flash in Improving the Concept Understanding of Elementary School Students. Journal of Primary Education. 8, 9 (Oct. 2019), 296-303. DOI:https://doi.org/10.15294/jpe.v10i3.35099.