The History of Mathematics could be a powerful tool for Mathematics teachers to improve their teaching, by offering to students a variety of ways to achieve
mathematical concepts successfully. The Catalan Mathematics curriculum for
secondary schools, published in June 2007, contains notions of the historical genesis of relevant mathematical subjects within the syllabus. However, there is no indication to develop the content associated with these subjects. We have designed a course for pre-service teachers of Mathematics with the aim of providing them with the knowledge needed to use historical materials in their classrooms. This contribution aims to analyze the implementation of these historical Mathematics activities.