5Postman Neil. Teaching as A Conserving Activity [M]. New York: Dell, 1979. 140.
6Taba H, Levine S, Elzey F. Thinking in Elementary School Children. (U. S. Office of Education, Cooperative Research Project No. 1574) [M]. San Francisco, San Francisco State College, 1964.
7Hunkins, Francis P. Teaching Thinking Through Effective Questioning[M]. Norwood, MA.. Christopher Gordon Publishers. 1995 (2^nd). 20.
8Wilen W W, Clegg A A, Jr. Effective Questions and Questioning: A Research Review [J]. Theory and Research in Social Education, 1986, (14), 2:153--161.
9Collins III, John W, O'Brien. The Greenwood Dictionary of Education [M]. Westport, Corm: Greenwood Press, 2003. 293.
10Corey S M. Teachers' Questioning Activity [A]. American Educational Research Association. Research on the Founda tions of American Education [C]. Washington D C, 1939. 43-46.
