Teaching, learning, reading, writing, culture, classroom management, new technologies... anything related to education. Think and Dream in English (plus some Spanish and Catalan).
"Even if you have a 21st Century classroom (flexible and adaptable); even if you are a 21st century teacher ; (an adaptor, a communicator, a leader and a learner, a visionary and a model, a collaborator and risk taker) even if your curriculum reflects the new paradigm and you have the facilities and resources that could enable 21st century learning - you will only be a 21st century teacher if how you teach changes as well. Your pedagogy must also change."