Research And Design Of MR-Based Distance Collaborative Learning System

Distance collaborative learning is a flexible and efficient learning mode that can facilitate learners’ knowledge construction and improve social skills.Mixed reality(MR)-based distance collaborative learning(hereafter referred to as MRDCL)can improve the shortcomings of traditional PC and mobile device display interaction.However,there is still a lack of research in the field on how to design MRDCL so that it can meet learners’ knowledge acquisition requirements and enhance the collaborative operation experience.This paper aims to build a MRDCL instructional design model and MR 3D collaborative user interface framework to provide theoretical support for the design of system examples.First,this paper proposes an MRDCL instructional design model that includes three modules of learning community,learning activities and learning activity support based on collaborative learning environment design theory,and discusses the design process and strategies of each module in detail.The model can help designers design collaborative learning activities suitable for the MR environment according to the learners’ requirements and the content of the teaching materials.Secondly,this paper combines the 3D user interface and the multiuser collaborative interface paradigm to propose the design elements,layers and framework of the MR 3D collaborative user interface,which can provide design guidance for the design of the user interface in MRDCL.Among them,the view is the core design element,and providing good awareness information in the shared view can promote the learning effectiveness and social presence of collaborators.Next,in view of the lack of research on the design of awareness information in MR shared views,this paper analyzes the weight relationship of awareness information by combining Kano and hierarchical gray set analysis to solve the problem of "what to present";and conducts three sets of user experiments on the core awareness information to determine the core awareness information in MR Three sets of user experiments are conducted to determine the design preferences of core awareness information in terms of presentation,spatial location and emergence mechanism in the MR environment,and to solve the design problem of "how to present".Finally,this paper combines the research results and conclusions of the previous paper and selects the high school geography course"Landforms" as a typical application scenario to complete the example design of MRDCL system.In summary,this study constructs an instructional design model for MRDCL and a design framework for MR 3D collaborative user interface,and validates the design for the awareness elements in the shared view,which extends the breadth and depth of MRDCL design research and practice and has important implications for the future experience enhancement of distance collaborative learning in the MR environment.