6Pepin,Y.(1998) Practical knowledge and school knowledge:a constructivist representation of education,In Larochelle,M.(etc) (ed.) Constructivism and education,Cambridge University Press,p.178.
7Satchwell,R.E..Using Functional Flow Diagrams to Enhance Technical Systems Understanding[J].Journal of Indtstrial Teacher Education,1996,Vol.34,No.2.
