The aplication of Multiple Intelligences Theory in lessons makes the teaching/learning activity more attractive both for the teacher and school children, and contributes to the increase of children's school performances. In this paper we emphasizing various intelligences stimulated within the lessons teached by the students carrying out their second pedagogical practice in gymnasium. The methods used in this research were the questionnaire and analysis of the activity's products carried out by the students in the third year of study, from the University of Piteşti, Faculty of Sciences, within the activity of pedagogical practice. By analyzing the given answers was found that the practicant students have stimulated diferite intelligences (verbal, logical, visual, kinesthetic, naturalistic, intrapersonal and interpersonal inteligences) within mixed lessons, depending on the methods and didactic tools used, and the notions teached. The verbal, logical and visual intelligences of the school children were the most frequently challenged within mixed lessons. Only the students who have teached notions of biology stimulated the naturalistic intelligence. Within lessons for formation of intellectual skills and abilities were activated two intelligences.