filahanasari, eka 2020. Ability of Strategic Competence of Mathematically Proficiency in Completing Open Ended Mathematical Questions: Kemampuan Strategic Competence Of Mathematically Proficiency Dalam Menyelesaikan Soal Matematika Open Ended. International Journal of Technology Vocational Education and Training. 1, 1 (Jun. 2020), 91-96. DOI:https://doi.org/10.46643/ijtvet.v1i1.22.