Abstract The objective of this research is to improve the learning outcomes of Exponential and Logarithmic through character-based scaffolding learning of class X.1 of SMA Negeri 1 Tanjung Semester 1 in the academic year of 2014/2015. The learning outcomes in this research include three aspects, (1) affective, sel-reliance characters variables; (2) psychomotoric, problem solving skills variables; and (3) cognitive, students' learning achievement. The primary and secondary data were used in this research.The data were gained from technique test in the form of essay test and non-test technique in the form of students' sel-reliance characters and problem solving skills observation. The descriptive comparative analysis is used to compare the result of the pre-test and the post-test score with the key performance indicator 85%.