In this commentary, I draw exclusively on the ten papers in this issue of "ZDM" focused on "Mathematical Tasks and the Student." These papers represent various cultural and theoretical stances and when reading them I was looking for common themes across some or all the papers. Based on my readings, I argue that (a) each task…

Short term memory (STM) and working memory (WM) performance consistently predict language abilities in children with developmental language disorders. However, causality is not fully established. Moreover, evidence from the fine-grained analysis of STM/WM tasks and comprehension of complex sentences, suggests that long term memory (LTM)…

The advocacy of task-based language teaching (TBLT) has met with resistance. The critiques of TBLT and the misconceptions that underlie them have already been addressed in Ellis (2009) and Long (2016). The purpose of this article is to move forward by examining a number of real problems that TBLT faces--such as how a "task" should be…

This commentary highlights findings from two reviews of research on the preparation and continuing development of regular classroom teachers to teach English language learners. Since both reviews use my "central tasks of teacher learning" framework, the commentary also assesses the framework's usefulness in highlighting areas where…

Research on multiple source use concerns how readers handle a number of different, often conflicting or discrepant, information sources to construct a mental representation of content. Students are increasingly being exposed to such complex reading situations, both in and outside of school. The digital world demands multiple source use, and…