In this work, we present the results obtained from the implementation of a conceptual Quantum Mechanics unit. The teaching of this unit took place in the subject "Modern and Contemporary Physics Topics I", pertaining to the graduate curriculum designed to prepare Masters in Physics Education at the Federal University of Rio Grande do Sul (UFRGS), Brazil. The learning evaluation of basic conceptual aspects of QM was done through the application of a questionnaire before and after the lectures. The results before the lectures have shown that the students had important conceptual shortcomings in QM. After the implementation of the conceptual QM unit, it was possible to observe changes in their conceptions, especially those involved with the distinction between classical and quantum objects.
teacher's preparation; quantum mechanics; learning evaluation