Istiqomah, S., Suyitno, H. and Safa’atullah, M.F. 2021. Mathematical problem solving ability of 8th grade students in terms of adversity quotient using discovery learning. Unnes Journal of Mathematics Education. 10, 2 (Aug. 2021), 144-154. DOI:https://doi.org/10.15294/ujme.v10i2.31699.