This document outlines different methods that can be used to measure self-regulated learning. It discusses measuring SRL as both an aptitude and an event, and some of the challenges in measurement. Some key methods mentioned include self-report questionnaires, observations of student behavior, think-aloud protocols, learning diaries, interviews, and analyzing digital traces of student interactions in online learning environments. The document advocates for using mixed methods to address limitations of individual approaches and gain a more comprehensive understanding of students' self-regulated learning.