This research is a classroom action research that aims to improve the learning outcomes of mathematics through contextual approach to intensify scaffolding on VIIIAgrade students of SMP Negeri 2 Donggo Bima at the subject math of cubes and blocks. The subjects were VIIIAgrade students of SMP Negeri 2 Donggo Bima in the second semester of academic year 2014/2015 with 30 students consisted of 8 girls and 22 boys. This research was conducted with two-cycles namely cycle I and cycle II. The data were collected by using achievement test at the end of both cycles and the observation data of each meeting. The data were analyzed by using quantitative and qualitative analysis. The results of this research showed that there was an increase in the mean score of students' cognitive aspects in the amount of 61.63 with a standard deviation at 19.86 which included as the lower category in the first cycle, those became 84.17 with standard deviation at 10.60 in the second cycle. Based on the analysis of the frequency distribution aspects of the student activity was 35.56% in the first cycle and increased to 80% with “good” category. The classical completeness in cycle I have not been fulfilled yet which gained 26.67% and it increased in the second cycle with 86.67%, so the classical completeness met. Thus, the use of a contextual approach by intensifying the scaffolding can improve the learning outcomes of VIIIAstudents in SMP Negeri 2 Donggo Bima.
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