This Book Focuses On Teaching English As A Fl To Young Learners In The Primary School. Set Within A Vygotskian Framework, It Describes A Longitudinal Classroom-based Research Project Carried Out In Spain With Children Aged Between 8 And 10. After Reviewing Related Literature From The Fields Of Sla And Educational Psychology, The Teacher-student Interaction Is Analysed On Two Different Levels: Firstly, An Activity Classification System Designed By The Authors Is Used To Trace The Development Of The Classroom Activity Within Topic-based Units And Secondly, A More Finely-grained Analysis Of The Discourse Reveals The Different Types Of Strategies Through Which The Teacher Mediates And Guides The Children's Learning.