The deep integration of emerging technologies and education provides an important driving force for innovative teaching forms,but the problems of insufficient technological literacy in the exist-ing teaching and learning have yet to be solved,and the dual-line blended teaching is expected to bring new insights for improving the technological literacy of teachers and students and innovating the form of teaching and learning.Theoretical level:the concept of dual-line blended teaching is defined,and the new constructivist theory,embodied cognition theory,and mind-flow theory are used as guide-lines to clarify the design principles of dual-line blended teaching,including the two aspects of tech-nological unification(virtual reality technology,digital twin technology,data analytic technology,and 5G technology)and integration and symbiosis.Practical level:taking the Course of Construction Engi-neering Measurement and Valuation in Vocational Education as an example,following the"three-way linkage"course path of"vertical connection before,during and after class,horizontal integration of on-line and offline,and seamless switching of virtual reality",we started from the"cloud roaming before class"to the three-stage construction of the dual-line hybrid teaching design framework:"cloud roam-ing awakens the consciousness of the main body before class,human-computer interaction facilitates in-person exploration during class,virtual-reality symbiosis expands cognitive boundaries after class",so as to achieve the same direction of professional teaching and intelligent parenting.
digital transformationdual-line blended teachinginstructional designvocational course
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