This study shows the development of some motivational dimensions of secondary school students when they are treated by the experimental way of teaching. The study was conducted on a sample of 240 pupils of The Secondary School Banovici, out of which 124 males and 116 females. The pupils were divided into two groups. The first group consisted of 120 pupils divided into four sections, out of which 73 males and 47 females. This is the control group. The second group also consisted of 120 pupils divided into four sections, out of which 51 male and 69 females. This group was subjected to the experimental way of teaching and thus represents the experimental group. Results show the changes in pupils motivational characteristics under the influence of innovative educational content that are... reflected through their activities and final attitudes on the physical education value. The discriminate analysis revealed the statistically important differences between pupils that are treated by the experimental program compared to students treated by traditional program in terms of motivation in physical education classes (PE classes). However, the study, in some way, solves the problem of inactivity and pupils lack of interest for the PE classes, i.e. it suggests the pupils possible development of motivation for work using the appropriate educational contents.