<![CDATA[The purpose of this research is to describe the mathematical communication of theoritist student in SMP Negeri 5 Malang in solving similarity problem. Subject of this research is one theoritist students. The indicators of mathematical communication that used in this research are adapted from the NCTM indicator then combined to the four Polya's steps. The results of this research show that the subject’s mathematical communication structure tends to be complete. Furthermore, the diagram created by the subject is proportional and completed by the length, unit, and label. Then, the words used by the subject in writing the reason of similarity tend to be ambiguous. In addition, the subject has used mathematical symbols formally but there are still some errors.]]>
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