Amrulloh, Akhsin, Sukamto ., and Husnul Hadi. “Penerapan Model Problem Solving Berbantu Media Kalkulator Ajaib Untuk Meningkatkan Kemampuan Pemahaman Konsep Operasi Hitung”. Indonesian Journal of Educational Research and Review 2, no. 1 (April 21, 2019). Accessed November 30, 2024. https://ejournal.undiksha.ac.id/index.php/IJERR/article/view/17298.