10A.Sfard. What can be more practical than good research?——On the relations between Research and Practice of Mathematics Education[J].Educational Studies in Mathematics,2005,(03):393-413.
3A Sfard. What can be more practical than good re- search? --On the relations between Research and Practice of Mathematics Education[J]. Educational Studies in Mathematics, 2005,58(3) : 393-413.
4M.Lamperc. When the problem is not the question and the solution is not the answer:mathematical knowledge and teaching[A].NCTM,2004.
5R.Lesh,T.Post,M.Behr. Representations and translations among representations in mathematics learning and problem solving[A].Lawrence Erlbaum Associates,1987.