Juan Carvajal Fernández is a Mathematics teacher at a primary school in a Chilean city with 30,000 inhabitants. He noticed poor mathematics performance in the country and his school in particular. Far from accepting this diagnosis, he looked for possible improvements and created the application Matlapp to include technology in the classroom dynamically and critically to reach educational goals. In this interview, he talks about his innovative experience and why it is relevant to choose mobile learning strategies in the current teaching processes. Also, he challenges other colleagues to include technology in the classroom to connect with students.