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The Effects of Self-assessment on the Students’ Science Concept Understanding and Science-related Attitudes in the Middle School      

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(1)Journal of the Korean Chemical Society 2002, Vol. 46, No. 3 Printed in the Republic of Korea.    

(2)        * . †.      (2002. 3. 30

(3) ). †. †. The Effects of Self-assessment on the Students’ Science Concept Understanding and Science-related Attitudes in the Middle School Jeonghee Nam*, Jiyoun Kim†, and Insik Hahn† Department of Chemistry Education, Pusan National University, Pusan 609-735, Korea † Department of Science Education, Ewha Womans University, Seoul 120-750, Korea (Received March 30, 2002).  .          ! "# $%& '() *+. ,- . /01 3 2& /34567, . /089 :- 2 2& ;<456 7 =8>+. /345- . /01 ? @AB& <C1 45 D /08E @AB- <C8 9 :- 4567 =8>+. F- 9G(20H0) IJ /08>E,    KL L?,   ! KL LM, L? NOP+. Q,    . RS1 /345 . RS89 :- ;<45 T U %,V W67 XYZ+. [1   ! %,! . S1 F \ ] W67 XYZ+. /345 ^ @AB& <C1 45- @AB& <C89 :- 45 T    ! %, ;_R67 `"1 H . )>6X,    `"1 H . ) 9 :*+.   -  ?a b $%& Gc, b ! %, !d& e+E fg 8E ]h+. : ,   ,   !, @AB ABSTRACT. In this study, the effects of a self-assessment on the students’ science concept understanding and sciencerelated attitudes were investigated. Student’s perceptions towards the self-assessment were also examined. Five classes from a middle school in Gyunggi Province were chosen. Two of those classes were assigned to the control group that no self-assesment tool was applied to and the other 3 classes were assigned to the experimental group which a self-assessment tool developed for this study was applied to. The experimental group was further divided into two groups for implement of two kinds of programs. One experimental group was provided some feedback such as solutions to problems and the other was not provided any type of feedback. The tests of science-related attitudes were administered before and after the instruction period. The science concepts understanding test was done only after the instruction. The results of this study were as follows. There were significant differences between the experimental group and control group in understanding of scientific concepts. The enhancement of science-related attitudes was also higher for the experimental group. Providing feedback to students was more effective in the improvement of students' science-related attitudes. However, there were no significant differences in understanding of scientific concepts in relation to the feedback in experiment.  287.

(4) . 288. groups. From the above results, it was acknowledged that self-assessment applied to the middle school science class showed considerably positive influences on the improvements of the understanding of scientific concepts and sciencerelated attitudes. Keywords: Self-assessment, Science Concept Understanding, Science-Related Attitudes, Feedback.

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(13)      . 291. Table 4. ANCOVA results on the science concept understanding Source of variation. df. Sum of squares. Mean squares. F. p. previous science achievement. 1. 44806.051. 44806.051. 202.169. 0.000. group. 1 196. 1734.826 43438.821. 1734.826 221.627. 7.828. 0.006*. 199. 691300.000. Covariates Main effects Residual Total *p<0.01.. %& '() Œ8 F# LM, L? /01   ! KL Q. T8>+. F ? /01   ! KL Q. Table 5 <08 >+.   ! KL 200 D /345 -- 140.25 E, ;<45 -- 133.447 XYZ +. LM /01   ! KL. LS8  1 n -.- /345- 140.88 E, ;<45132.4667 /345 - /- W67 XYZ+. Ð 45   ! KL Q `"1 H  ]. '() Œ8 LM   ! KL. C‡f67 8 C‡& =& /01 Q. Table 6 <08>+. C‡& = Q, /345 ;<45Ò    ! KL `"1 H  ] W67 XYZ +. Š1 Q . S1 F    ! %, 0nRf $%& e W – Æ ]+.. $ , -./"  ! "#$ %& '(. /345 ^  1 @AB `ë  ؖ    H  ]. '() Œ8 F ? /01    KL Q. Table 7 <08>+.    KL 100 D  @AB& e 45(A) -- 55.48 E, @AB & G9 :- 45(B) -- 58.2367 XYZ+. 2  1  pR& LS8 1 n -.@AB& e 45(A)- 55.47 E, @AB& G9 :45(B)- 58.2367, @AB& G9 :- 45(B)  - /- W67 XYZ+. Ð 45L  ;_R67 `"1 H  ] . '() Œ8 2 1 pR& C‡f6 7 8 C‡& =& /01 Q. Table 8 <0 8>+. C‡& = Q,    @AB < C `ë Ø `"1 H  1 W67 XYZ+. Table 5. Means, standard deviations, and adjusted means of the science-related attitudes. Table 7. Means, standard deviations, and adjusted means of the science concept understanding by feedback. Variable. Mean. Std. Dev.. Adj. M. Variable. Mean Std. Dev. Adj. M. Experimental Control. 140.25 133.44. 21.36 21.64. 140.88 132.46. Group providing feedback(A) Group not providing feedback(B). 55.48 58.23. 19.41 20.46. 55.47 58.23. Table 6. ANCOVA results on the science-related attitudes Source of variation. df. Sum of squares. Mean squares. F. p. pre-test. 1. 49416.366. 49416.366. 233.922. 0.000. group. 1 196. 3352.767 41405.376. 3352.767 211.252. 15.871. 0.000*. 199. 3859630.000. Covariates Main effects Residual Total *p<0.01. 2002, Vol. 46, No. 3.

(14) . 292. Table 8. ANCOVA results on the science concept understanding by feedback Source of variation. df. Sum of squares. Mean squares. F. p. pre-test. 1. 19948.434. 19948.434. 83.638. 0.000. group. 1 118. 209.429 28143.941. 209.429 238.508. 0.878. 0.351. 121. 445200.000. Covariates Main effects Residual Total. ؖ,  RS1  1 @AB <C     $%& " # :*+E Æ ]+. —ŠX ;_R67 `" 89 :6X @AB& <C89 :- 45(B)    -   @AB& <C1 45(A)  )+ æè« /- W67 XYZ+. — f  8X. @AB& <C1  Å Q 2(Æ ]+.   `Ê  @A B M3 !d m9 :*+  `Ê ]h+.  1 U tRf `7 ½ <01 @A B `Ê! — f& 2& ]+. ƒ„,   ò- _7 4 U ~y1 Ê  @AB& G9 ù8 >å,   Å    L 4 U ~y1 @AB& <0 Gh6Å 8  XY+. [1, nÃ8½ SOX & <08)+ ÑE j. <08 Ò

(15) Rf ªÂ& LS8>+ ! `7  ]+. Brophy Good(1986)- L  @AB v,R Ç)+ tR Ç, ¤0R)+  çÃ8½ <08>& Ç U \R – 8>+. ê @AB& G9 :- +   @AB ¯ °p& fg8E ]9D /< @AB& G½ mÅ æè « 5»& žöX @AB `Ê ؖ nRf fg & u½ V+. (p>0.05).. 21. Table 9. Means, standard deviations, and adjusted means of the science-related attitudes by feedback Mean Std. Dev. Adj. M. Group providing feedback(A) 138.60 Group not providing feedback(B) 134.77. 18.81 22.65. 139.45 134.31. $ , -./"  )* + $ %& '(. /345 ^ @AB `ë7 f8    ! H  ]. '() Œ8 F ? /01   ! KL Q. Table 9 <08 >+.  ! KL 200 D /345 A  -- 138.60 E, /345 B -- 134.777 XY Z+. LM /01  ! KL. LS8 1 n -.- /345 A 139.45 E, /345 B  134.317 @AB& e 45 - /- W67 XYZ+. Ð 45   ! KL ;_R67 `" 1 H  ]. '() Œ8 LM   ! KL Q. C‡f67 8 C‡& =& /0 1 Q. Table 10 <08>+. C‡& = Q, @AB `ë Ø Ð 45 L    ! `"1 H  ] W67 XYZ+. W-  1 @AB <C . Table 10. ANCOVA results on the science-related attitudes by feedback Source of variation. df. Sum of squares. Mean squares. F. p. pre-test. 1. 31165.637. 31165.637. 157.366. 0.000. group. 1 118. 869.221 23369.400. 869.221 198.046. 4.389. 0.026*. 121. 2900938.000. Covariates Main effects Residual Total *p<0.05. Journal of the Korean Chemical Society.

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(23)       455. 7. Fiske, S. T.; Taylor, S. E. Social Cognition; McGrawHill, Inc: New York, 1991. 8. Black, H. Assessment: A Scottish model in Fairbrother, B., Black, P. J.; Gill, P. Assessing Pupils: Teachers assessing pupils- lesson from science classroom. Association for Science Education: London, 1994. 9. Black, P. Testing: Friend or Foe? The Theory and Practice of Assessment and Testing; Falmer Press: London, 1998. 10. White, R. T.; Gunstone, R. E. International Journal of Science Education, 1989, 11, 577. 11. Gorden, S.; Gippson, C. Assessment: A teachers guide to the issues assessment for learning: Hodder & Stoughton Press: London, 1997. 12. Baird, J. R.; Fensham, P. J.; Gunstone, R. C.; White, R. T. Journal of Research in Science Teaching 1991, 28, 163. 13. Satterly, D. Assessment in schools; Blackwell Press: London, 1989. 14. . , 1998. . 15. Moreland, R., Miller, J.; Laucka, F. Journal of Educa-. 

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