This study describes the mathematical processes in TIMSS (Trends in Mathematics and Science Study) to reflect issues. A descriptive qualitative methodology was used in this analysis as the research approach. The research allocated the respondent to the 6th grade students of Muhammadiyah 6 in the sub-district of Dau, Malang regency, East Java, Indonesia. Using a TIMSS 2011 test and interview, data was obtained. The results of the study showed that visual representation took place in both classes of high, medium, and low capacity. Students of high and low capacity conducted the symbolic representation process at the comprehension level, while students of medium capacity performed the symbolic representation process at the problem-solving stage. In addition, as they wrote topics, the writing of the conclusions was done by students who had high skill. Students who had medium potential when they wrote questions completed the writing of the conclusions. The students with a low level of skill wrote what was understood and asked about the issues.

The research has a goal to describe writing mathematical student capabilitybased on mathematics expression aspect and writing text aspect on thesystem equation linear two variable lesson.The research is using qualitativeapproach which creature of descriptive. The collecting technique of datawhich done is about the result of answering test. The result’s analysis ofthe research student capability on writing mathematical expression andwriting text which be on the system equation linear two variable matter isabout the student can writing mathematics model which suitable with thematter has given, but did not write the formula completely. The result’sanalysis of test on the writing text aspect, student can write the symbolexactly but there is notconsistently and less coherent on writing steps. Ashortage of mathematics expression and writing text because of student lesson understanding what it asked on the matter. The abilities’ result of studentsmathematics written based on expression mathematics on the highcathegories and get average about 67,54%, while getting result of writingtext on the middle cathegories as about 60,52%.