4Spiro R J , Jacobson,M J & et al. Cognitive Flexibility, Constructivism, and Hypertext : Random Access Instruction for Advanced Knowledge Acquisition in Istructured Domains,Constructivism and the Technology of Instruction: A Conversation [Z]. Hillsdale, Lawrence Erlbaum Associates,1992.
5Merrill, Instructional Transaction Theory:Instructional Design Based on Knowledge Objects[J]. EDUCATIONLAL TECH-NOLOGY /May-JUNE, 1996.
6P L Smith & T J Ragan. Instructional Design (Second Edition)[M]. JOHN WILEY & SONS,INC ,1999.