In this book, a didactic sequence developed especially for the Youth and Adult Education modality was elaborated and applied, in order to allow the insertion of Modern Physics in the school schedule of Secondary Education. The sequence suggests an approach linked to Science, Technology and Society (STS), thus making it possible to expose the application of the phenomena studied in the classroom and their respective importance in today's society. The material was developed and applied in four classes, two of which were expository classes on Magnetic Nature and its applications, one class with resolution of activities and, the last class, an approach on the Standard Model of Particle Physics. In addition, some Brazilian scientists who have contributed/contribute to recent discoveries were cited. The insertion of themes like this contemplates a contextualised teaching, that is, closer to the student's reality, which favours the dialogue between the physics taught at school and its respective application in technologies present in everyday life.