Penalaran Proporsional Siswa Kelas Menengah Dalam Menyelesaikan Masalah Matematika Ditinjau Dari Adversity Quotient : Proportional Reasoning of Middle School Students in Solving Mathematical Problems Viewed From Adversity Quotient. pedagogia 2020, 9 (1), 67-80. https://doi.org/10.21070/pedagogia.v9i1.259.