Wahyona, Uswatun Chasanah, Wahyu Cahyo Wibowo, Usup Supriatna, and Wahyu Budi Riyandi, “Improving Students’ Numeracy Skills Using the CPA (Concrete, Pictorial, Abstract) Approach in Number Material for 2nd Grade at MIN 1 Batam”, JPG, vol. 1, no. 4, pp. 577 – 582, Mar. 2025.