The use of technology in the classrooms brings out new teaching methodologies, especially in teaching mathematics. in a teacher preparing program at undergraduate level of instruction, besides working out examples of activities and training students to use technological equipments, it is necessary to educate future teachers about the potentialities of technology as teaching aid, and the right choice of teaching strategies. the recommendations for profile of a modern teacher of mathematics, from teacher standards of many countries including brazil, cite the importance of the recognition of technology as powerful communication media to be taken into teaching/learning situation. also, the standards point out the importance of calculators and educational software as teaching/learning aid, especially in problem solving with real data. consequently, these recommendations require a proper preparation of future teachers to be able to select the right technology for each educational situation and to analyze the information, in order to take the best advantage of new methodologies. the main objective of this paper is to contribute to the discussion on the introduction of technology in content and methodology into the curriculum of mathematics teacher preparation program, which could effectively change the attitudes and abilities of teachers in their profession. we present a description of a course from the curriculum of mathematics teacher preparations program of federal university of Sao Carlos that sis designed to attend this aspect. the paper discusses the objectives of the course, it contents, the outcomes and the reactions from the students.