Making thinking visible: growth in graphical literacy, grades 3 to 4. - Yongcheng Gan; Marlene Scardamalia; Huang-Yao Hong; Jianwei Zhang 004 (CSCL, 2007)

A Learning Framework for Knowledge Building and Collective Wisdom Advancement in Virtual Learning Communities. - Yongcheng Gan; Zhiting Zhu (J. Educ. Technol. Soc., 2007)