Social Practice I/ is a competency-based English textbook especially written for Bachillerato students according to the Reforma Integral de la Education Media Superior (RIEMS). The contents are organized into units that develop competencies through the building of knowledge on the learner?s part with various types of activities that include technology experiences. The learner has plenty of opportunities to develop social practices such as exchanging information and team problem solving through the use of English in order to develop his/her communicative competence in a second language.