Fihartini, S. A. and Muryaningsih, S. (2023) “Efforts to Enhance Students’ Communication Skills and Academic Achievement in Learning the Volume of Cube and Beam Spaces through the Problem-Based Learning (PBL) Model Assisted by Heyzine FlipbooksI in Five Grade of Danasri 01 Public Elementary School”, Proceeding Internasional Conference on Child Education, 1(1), pp. 206–219. Available at: https://proceeding.unimar.ac.id/index.php/icce/article/view/24 (Accessed: 7 July 2025).