Learning how to think critically, analyze sources, and develop an evidence-based account is central to learning history. Often, learners struggle to understand inquiry, to apply it in specific scenarios, and to remain engaged while learning it. This paper discusses preliminary design of a mobile AR system that explicitly teaches inquiry strategies for historical sources and engages students to practice in an augmented real-world context while scaffolding their progression. The overarching question guiding our project is how and to what extent AR technologies can be used to support learning of critical inquiry strategies and processes.