Rizkia, Annissa Dwi, Sjaifuddin Sjaifuddin, and Dwi Indah Suryani. 2022. “Development of Problem-Solving Based Test Instruments to Foster the Students Creative Thinking Skills on Environmental Conservation”. Jurnal Pijar Mipa 17 (4):447-54. https://doi.org/10.29303/jpm.v17i4.3671.