“…Researchers collaborating with elementary school mathematics teachers have extensively examined the effect of PBL on mathematical problem-solving abilities (MPSA), mathematical creative thinking skills (MCTA), mathematics communication skills (MCA), mathematical literacy skills (MLA), and mathematical conceptual understanding abilities (MCUA). From several published research reports, some researchers found that PBL has a significant positive effect on enhancing MPSA (Pohan, Asmin & Menanti, 2020;Riswari, Yanto & Sunarso, 2018), MCA (Kodariyati & Astuti, 2016), MCTA (Katminingsih & Widodo, 2015), MLA (Firdaus, Wahyudin & Herman, 2017), and MCUA (Kaharuddin, 2018). However, some researchers also claimed that PBL does not have a significant and even harmed enhancing MPSA (Ali, Hukamdad, Akhter & Khan, 2018), MCA (Rosmala, Isrok'atum & Panjaitan, 2017), MCTA (Indriani, Widyasari & Amril, 2019), and MCUA (Uygun & Tertemiz, 2014).…”