Yuniarti DA, Intyanto GW, Pawening AS. DGMATH: Android-Based Mathematics Digital Media for Elementary School Students Materials on Numbers Operations Using the RnD Method. Universitas Jambi [Internet]. 2022Apr.30 [cited 2024Oct.6];12(1):41-5. Available from: https://mail.online-journal.unja.ac.id/edumatica/article/view/17241