Afriyenti, Afriyenti. 2018. “Process Improvement Through Learning About Build Size Model Cooperative Stad And Quiz In Class Vi Sdn 33 Desert Long District Of Koto Xi Tarusan In Subjects Mathematics Academic Year 2016/2017”. Jurnal Ilmiah Pendidikan Scholastic 1 (2):43-51. https://doi.org/10.36057/jips.v1i2.246.