Fihartini SA, Muryaningsih S. 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 [Internet]. 2023 Jul. 22 [cited 2025 Jul. 7];1(1):206-19. Available from: https://proceeding.unimar.ac.id/index.php/icce/article/view/24