Sarmi , Chintya Rachmawati Putri, and Asmin. 2022. “The Effect of a Realistic Mathematical Approach on the Mathematical Problem Solving Ability of Class VIII Students of SMP IT Al-Hijrah 2 Deli Serdang”. Formosa Journal of Applied Sciences 1 (6):1295-1314. https://doi.org/10.55927/fjas.v1i6.1946.