AHDHIANTO, E.; MASULA, S.; THOHIR, M. A.; KHOTIMAH, K. Development of PBL-based e-modules to improve problem-solving and critical thinking skills of elementary school students. Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika, v. 10, n. 1, p. 167-178, 31 May 2024.