Abstract:
The research applied was Classroom Action Research that aims to improve
the performance of teacher for increase students’ achievement by implementing
cooperative learning model of numbered heads together structural approach. The
subject of the research is students of class VIIIc SMPS Karya Indah Tapung, in
the first semester of the 2012/2013 school years. There are 24 student in that
class, consisting 13 girl and 11 boys who have heterogeneous academic ability.
There are two cycles and four stages in this study. Each cycle has four stages, they
are planning, action, observation, and reflection. The result of research showed
that the improvement of students learning achievement. The percentage of first
cycle showed that students who get minimum achievement criteria (MMC), from
20,8 % to 66.66%. While, in the second cycle, the percentage of students who
minimum achievement criteria (MMC) increase to 79.1%. Based on these results,
we can conclude the implementation of Cooperative Learning Nunbered Heads
Together Approach can improve students’ mathematics achievement in class
VIIIc of SMPS Karya Indah Tapung in the first semester of the 2012/2013 school
years.
