As part of doctoral research in the History of Mathematics Education, this text focuses on the implementation of the Training Within Industry (TWI) in Brazilian industry. Known as pedagogy of industrial education, this training method was developed during World War II and it was brought to Brazil by the Brazilian-American Commission of Industrial Education (CBAI) in 1950, with the purpose of forming and perfecting agents and mastery supervisors in the workplace in order to teach properly factory workers. In the method TWI excellence in teaching supervisor or instructor was a decisive factor in the success of training, in case of failure was responsible for the failure in the learning process of their students. Thus, the exercise of knowledge and skills of the supervisor representing the increase in production levels, by generating skilled labor. This method was applied in Brazil in industrial and technical schools, and the various electro-electronic industries, metallurgy, pneumatic, footwear, automotive and other gifts of the main Brazilian states, contributed to the increase in industrial production of the country. The preparation of this paper was based on the analysis of the CBAI Bulletins (1947-1962), produced monthly periodical published by the Commission that their actions developed in Industrial Schools and Technical Schools, and thus spreading the ideology of industrialism in its appearance more naive. The case of TWI shows the presence of a technique rigorously standardized, linked to CBAI operating in industrial education, to the benefit of Brazilian industries.