Rodrigo Díaz Alcázar reflects on his first teaching experience at Mariano Moreno School N°143. He felt anxious at first but developed good rapport with students, exchanging gifts and stories. Rodrigo taught English concepts like colors, numbers, and directions through boxing demonstrations and other interactive lessons. However, he notes areas for improvement like classroom management, using the whiteboard more, and making lessons more active rather than boring monologues. Rodrigo is grateful for what he taught the students and what they taught him about effective teaching.