This document discusses developing critical thinking skills in students through document-based study in history. It outlines key terms and learning outcomes for document-based questions. It emphasizes teaching students to critically analyze primary source documents by considering the type of document, author, context, and purpose. Sample document-based questions are provided on topics from the Irish history syllabus from 2014-2015. Comments from past exams stress the importance of referring to multiple documents and avoiding assumptions about bias. Suggestions are made for developing students' historical literacy through exercises sorting information and using writing frames.