The existing literature on indicators of an optimal learning environment for high-ability students frequently discusses the concept of challenge. It is, however, not clear what, precisely, constitutes appropriate challenge for these students. In this study, the authors examined an undergraduate honours course, Advanced Cell Biology, which has…

The text and accompanying workbook are designed to help second language teachers explore theories of language teaching and learning, deriving a set of hypothesized principles for classroom teaching based on the concept of proficiency and suggesting classroom techniques using them. The first two chapters outline and expand on both theoretical and…