Inquiry learning has been developed for years and many countries have incorporated inquiry learning into the scope of K-12 education. The knowledge-sharing process of inquiry learning tends to be complex. Therefore, we propose using location-based augmented reality (AR) to immerse students in the inquiry learning process. Mobile devices were used to immediately record and observe objects and enable learners to communicate with each other and engage in discussions, which raises their level of knowledge. The process of inquiry learning entails five steps: asking a question, attempting to answer the question, stimulating creative concepts, multiple people discussing the topic, and lastly, reaching a conclusion based on discourse and discovering an in-depth question from the conclusion, resulting in a new inquiry cycle. Therefore, to better understand learner behaviours in online knowledge-sharing discussions using location-based AR, we used an interaction analysis model to explore knowledge discussion behaviours among multiple participants to understand whether location-based AR helps students achieve higher phases of knowledge construction.