The inspection of mistakes can play a powerful role in an individual's learning process (Boaler 2015). The purpose of this article is to support the reader in selecting mistakes that can be leveraged to benefit the learning of all students. Specifically, the authors focus on "which" and "why": "which" mistakes to…

Middle school is a crucial transition period for students as they move from concrete to algebraic ways of thinking. This article describes a sequence of instruction geared toward helping prospective middle school instructors teach the topic of percentages.

This study investigates raters' identification of errors in the writing of an EFL student. Drawing on data collected from a correction task and a questionnaire, we examine the beliefs and practices of three distinct groups of 16 participants in each: native English speaking EFL teachers, Japanese speaking EFL teachers and educated native English…