The research is dony based on students  problem solving mathematical are low. At the first daily test on second semester in eighth graders at SMP 3 Lengayang 2012/2013. It can be seen from the  percentage of is aims to know : what are studentsâ ability problem solving mathematical by using identity corporate technigue is more better than convensional technigue. the type of research is Experimental research. The date analysis technigue is used t- test and Minitab.The result of hypothesis testing (P-value) = 0,036. It mean H0 is rejected and H1  is acjeted it can be concluded that the studentsâ ability toward problem solving in mathematical by using identity corporate technigue is more better than conventional technigue in eight grade at SMPN 3 Lengayang.
                        
                        
                        
                        
                            
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