3National Committee on Science Education Slandards and Ass-essment,Natlonal Research Council.National Science Education Standards[M].Washington,DC:National Academy Press,1996:23, 171.
4WestEd & the Council of Chief State School Officers under eontraet to the National Assessment Governing Board.Science Assessment and Item Specifications for the 2009 National Assessment of Educational Progress [M/OL].http://www.nagb. org/publications/frameworks.htm.National Assessment GoverningBoard, 2007 : 119.
5Donovml,M.S.& Bransfbrd,J.D.,Editors;Committee on How People Learn:A Targeted Repoll for Teachers;National Research Council.How Students Learn:Science in the Classrtoom [M]. Washington,DC:National Academy Press,2005:427.
7Michaels,S.,Shouse,A.W.& Schweingn'uber,fi.A.;National Re- search Council .Ready,Set,Seiencel:Putling Research to Work in K-8 Science Classrooms [M] .Washington,DC: National Academy Press, 2007 : 17.
8Gabel,C.Impact tff Ihe Reform Efforts on K-12 Science In- quiry [M]//SunaI,D.W.& Wright,E.L.The lmpact of State and National Standards an K-I2 Science leaching.Greenwish, Connecticut: Information Age Publishers, 2006 : 242.
9Flick,LB.& Lederman,N.G.Scientific Inquiry and Na-ture of Science [M].Dordrec, ht,Boston & l.ondon:Kluwer Aca- demic Publishers, 2004 : xi., 315, xii.
10Committee on Development of an Addendum to theNational Science Education SlandaMs on Scientific luquiry; Center for Science,Mathematics,and Engineering Education; National Research Council.Inquiry and the National Seience Education Standards [M].Washinglon,DC:Nalional Academy Press, 2000 : 20,29,30.
