The Design And Implementation Of A Virtual Teacher In Three-dimensional Virtual Learning Environment

With the development of virtual reality technology and the optimization of network environment, three-dimensional virtual world which has the features of immersive is widely used in the field of education. But for learners, because of the lack of guidance and the Information Trek, three-dimensional virtual learning environment has a greater cognitive load than web-based learning environment. As one of the applications of artificial intelligence, virtual teacher has the features of lively, interactive, affinity and so on, which can provide effective teaching service and help learners to adapt to the three-dimensional virtual environment quickly and effectively.This study investigate and analyze the reason why learners have difficulties to adapt to the three-dimensional virtual environment, and proposes that virtual teacher which has so many advantages can help learners to adapt to the three-dimensional virtual environment quickly and effectively. First of all, this study Interviews those learners who use three-dimensional virtual environment first time, based on the results of interviews, we get the reason and countermeasures. Then, based on the features of teacher in real environment, we design the inventory of appearance, words and actions for virtual teacher, what’s more, we also realize the teaching function. At last, this study tests the result of virtual teacher.This study suggests that virtual teacher in three-dimensional virtual environment can reduce the cognitive load of learners effectively and help them to adapt to the three-dimensional virtual environment quickly and effectively.