This research work not only proposes a deep insight to initiative and vivid concept modeling which makes use of several techniques like flash animation, rolling image-based introduction, virtual experiment, etc., but also explores the potential integration of synthetic characters with virtual learning environment to better simulate the social interaction and social awareness. Through analysis of constructivist learning theory, we present a new learning strategy with pedagogical agent. Based on this strategy, we take CG course in practice as an example to implement our multi-user application for individual learning and collaborative learning. Experiment results show that learning attraction, especially some difficult concept understanding, is very inspiring, and learning result is hopefully improved.