Rustiyanah Rustiyanah, Teti Ratnawulan, Muhammad Aditya Firdaus. Implementing Number Card Media to Teach Natural Number Symbols for Students with Mild Intellectual Disabilities: A Case Study in Special Schools. IJHESS [Internet]. 2025 Dec. 27 [cited 2026 Oct. 12];5(3). Available from: https://ijhess.com/index.php/ijhess/article/view/1991