Book excerpt: Investigating Disciplinary Literacy presents a framework for conducting professional learning cycles focused on disciplinary literacy, based on professional development and research projects that the authors have conducted with a range of districts over the past 5 years. In addition to outlining the steps of the cycle, the authors identify four "working habits" essential to initiating and sustaining DL projects: balancing content with process; creating a culture of adaptation and invention; attending equally to intermediate and DL skills; and positioning teachers and leaders as learners within projects. Written in a reader-friendly voice for a practitioner audience, the book provides practical, research-based guidance for those seeking to collaboratively explore and implement DL-related practices in context-specific, meaningful ways--Provided by publisher.