Rani Safitri, Sanjaya, Eka Ad’hiya, Andi Suharman, & M. Hadeli. (2024). Development of Polymer E-Modules in Solution, Solids, and Amorphous Based on Problem-Based Learning. Orbital: Jurnal Pendidikan Kimia, 8(2), 153-165. https://doi.org/10.19109/ojpk.v8i2.24611