This research presents a work in progress in which we discuss the potentialities and challenges in the development of Persuasive Technologies (PTs) and the possible opportunities of use in the most diverse areas. However, we emphasize the impact of the use of Pts as a motivational agent of the teaching and learning process. More precisely, this work investigates the use of PT as a mediator of characteristics related to the individual's perception of emotions and behavior. More precisely we propose the the Fogg Behavior Model (FBM) transcription for a computer tool. To do this we use the Fuzzy Logic. In order to validate the framework, we present a application in a scenario focused on the reduction of electric energy consumption. The results validate the proposed modeling as it relates to the measurement of the indexes of ability and motivation.