Abstract:
The main goal of this research is to explore the Indonesian traditional game as the context which is
for acquiring the concepts of factor numbers. This research was held in the first semester 2010/2011
with a total number of 20 fourth grade students. Realistic Mathematics Education (RME) as the
basic principle in teaching and learning processes of this research. With RME tenets, PMRI in
Indonesia has an important role for a new pedagogy in mathematics classroom whereas students are
encouraged to construct mathematical idea within their daily life. The research was conducted by
design research methodology, comprising namely preliminary design, teaching experiment, and
retrospective analysis phase. The discussion in classroom present to get information of the students'
understanding about factor numbers through their experiences in playing bekel game. The result of
this research shows the use of Indonesian traditional game as the context in learning factor
numbers. So, the students can explore their understanding in learning process.
