3Willoughby S S. Mathematics Education in A Changing World [M]. Alexandria, VA: Association for Supervision and Curriculum Development, 1990. 1--2.
4Sue Johnston-Wilder, Peter Johnston-Wilder, David Pimm and John Westwell. Learning to Teach Mathematics in the Secondary School, A Companion to School Experience [M]. Routledge, London and New York, 1999. 146.
5Richard W. Riley. e-Learning:putting a World-Class Education at the Fingertips of All Children(The National Educational Technology Plan)[Z]. Office of Educational Technology,Department of Education,U S
