8Nohuhiko, N. Mdthematics teaching by "open-approach method*' in Japanese classroom activities[M]//In H.S. Park et al. (Eds.), Proceed ings oF ICMI-EARCOME1. Kore0 Society of Mathematics Education, 1998(2) : 185-192.
9ColliS, K.,& Romberg, T.A. (1991). Assessment o mathematical performance: An analysis of" open-ended tests[M]//In M. C. Wittrock, & E. L.Baker (Eds.). Testing and Cognition[C]. New Jersey: Prentice Hall, 1991 : 82-130.