This book is unique in bringing together theory, research, and practice about English encountered outside the classroom -- extramural English -- and how it affects teaching and learning. The book investigates ways in which learners successfully develop their language skills through extramural English and provides tools for teachers to make use of free time activities in primary and secondary education. The authors demonstrate that learning from involvement in extramural English activities tends to be incidental and is currently underutilized in classroom work. A distinctive strength is that this volume is grounded in theory, builds on results from empirical studies, and manages to link theory and research with practice in a reader-friendly way. Teacher-educators, teachers and researchers of English as a foreign language and teachers of English as a second language across the globe will find this book useful in developing their use of extramural English activities as tools for language learning.