In the recent education, the quality of critical thinking of puipils and of students is the first step in sense. However, each type of the critical thinking usually appears according to their certain act. For arising the quality of this thinking of students it is necessary to understand how to do this and which act you should do, for example, in teaching mathematics by which students can train and develop themselves in their works. This paper has introduced measures to develop the capacity to think for teaching students in solving common in with examples.