TY - JOUR T1 - The Effect of Integrated Batak-angkola Culture on Open-ended Approach to Mathematical Creative Thinking Skills of Middle Secondary School Students A1 - Ritonga, Hasna Dewi A1 - Mulyono, M A1 - Minarni, Ani Y1 - 2018 PY - 2018 DA - 2018/10/30 N1 - doi: 10.12691/education-6-10-11 DO - 10.12691/education-6-10-11 T2 - American Journal of Educational Research JF - American Journal of Educational Research JO - American Journal of Educational Research SP - 1407 EP - 1413 VL - 6 IS - 10 PB - Science and Education Publishing SN - 2327-6150 M3 - doi: 10.12691/education-6-10-11 UR - http://pubs.sciepub.com/education/6/10/11 Y2 - 2018/10/30 ER -