This document discusses key theories and approaches to language teaching and learning. It summarizes Vygotsky and Bruner's theories that meaningful instruction and scaffolding can help children learn and develop. It also outlines the creation of Plurilingual Schools in Buenos Aires based on social, educational, and linguistic pillars. The goals of the schools grow with learners across two cycles, with a focus on language acquisition in the first cycle and awareness of how English works in the second cycle. An interactive approach using meaningful materials and teacher mediation aims to help students solve problems and develop across four language levels. Teachers are encouraged to be critical and students show more positive attitudes towards English.