The matter of the ways and means of influencing the individual in order to optimize his creative potential tends to have these days a main place in the field of science and social practice concerns. The human activity as a whole implies a multitude of aspects belonging to the human psychic. The process of thinking is a general process of maximum complexity that coordinates these activities. The high degree of generality of these classes, the excessive abstracting, the tendency of some teachers to transmit as much information as possible, often exceeding the curriculum, do not meet the necessity of developing the student’s thinking process. Practising critical thinking requires from students to be involved in the learning process, at the same time, in the actual experience, in the process of observation, reflection and learning, and in applying the achieved knowledge; the teaching-learning process implies covering the levels of evoking, realizing the meaning and reflecting.
Key words: concepts, notions, reasons, reasoning, problem solving