<![CDATA[To the goal of learning, teachers use various means, one of which is the use of learning media. One of the defence media that can be refined in the observation of the material of the Operation Perkalian in the pupils is the use of the mathematical numerical trick. (TEKAT). Developing a valid and practical mathematical cross-puzzle media is the goal of this research. Subjects in the research trial were students of class III at SDN K in the area of Kapanewon Sedayu Bantul. This research is based on Borg & Gall procedures. This research has produced valid data from design experts of 96%. While the level of practicality of the media of the mathematical puzzle game is described as very practical in the trial in class III SDN K in the area of Kapanewon Sedayu Bantul with a percentage of 95.6%. Based on the acquisition of percentages shows that the medium of the developed mathematics puzzle games is very useful and makes it easy for students to learn math in particular in the operation of integer numbers.]]>
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