In this book, I have decided to present three articles that I wrote at the end of my specialisations. Two of them deal with the issue of sexuality. They deal with prejudice, perceptions and the experiences of school teachers and students. The third is about environmental education and its importance in motivating teachers. In this way, I hope to contribute to the world's education, making teachers and students feel motivated to think about these issues, encouraging colleagues to engage in transformative educational practice, getting out of inertia and allowing themselves to enter into the possibility of new actions.