ANALISIS KESALAHAN SISWA KELAS VIII SLH MEDAN DALAM MENGERJAKAN SOAL MATEMATIKA MATERI FUNGSI DITINJAU DARI PROSEDUR NEWMAN [ANALYZING STUDENTS’ ERRORS IN SOLVING MATHEMATICS PROBLEMS IN FUNCTION TOPICS BASED ON NEWMAN’S PROCEDURES IN GRADE 8 AT SLH MEDAN] - Paladang, Karmila Kristina (Universitas Pelita Harapan, 2018)