Practice as a necessity for learning a second language has been a tacit assumption among language teachers for quite some time; however, the concept has not been widely considered from a theoretical perspective until now. This volume of twelve original articles focuses on the topic, with attention to the four skill areas of reading, writing, listening and speaking. The contributors explore a number of questions including what kind of practice is most effective, in what contexts, and for what kinds of learners. This text will serve as a valuable resource and reference for second-language educators and researchers alike.