The purpose of this study was to introduce problem posing activity to third grade students who have never met before. This study was also explored students' metaphorical images on problem posing process. Participants were from Public school in Marmara Region in Turkey. Data was analyzed both qualitatively (content analysis for difficulty and limitedness of pose problems and metaphorical imagination) and quantitatively (non-parametric Wilcoxon Sign Test). Since experimental and control group were not used in the study, this study was nonexperimental study. The participants were mingled with problems for warming up to generate a problem by themselves. After that they were offered three semi-structured problematics situations. Students were asked create a systematic structure to given problematic situations. Comparisons were made by means of pre-test and post-test. The results of this study revealed that the students were successful in structured type considerably. Further, students' insight on problem posing was identified by metaphors.