Agustin, Yosi Tri, Sekolah Lentera Harapan Sangihe, North Sulawesi, Indonesia

• Vol 1, No 1 (2017): December - Research in Mathematics Education
  Hubungan Motivasi Belajar dan Disiplin Belajar Siswa Kelas IX Pada Pembelajaran Matematika di Suatu Sekolah Kristen [The Relationship between Learning Motivation and Learning Discipline of Grade 9 Mathematics Students at a Christian School]
  Abstract  PDF