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Teachers' & Students' Concepts of the Measurement of the Size of the Earth

  • Chae, Donghyun (Jeonju National University of Education) ;
  • Han, Jejun (Jeonju National University of Education)
  • Received : 2013.02.12
  • Accepted : 2013.04.02
  • Published : 2013.05.31

Abstract

The purpose of this study is to figure out how teachers conduct an experiment in measuring the size of the Earth and how students recognize it. For this study, an in-depth interview was conducted one week after the lesson on the experiment about measuring the size of the Earth. The participants were five secondary school teachers and five secondary school students. The in-depth interview was recorded and transcribed. The result of the interview was drawn through an inductive categorized analysis method. As a conclusion of this study, the teachers taught the students the lesson using alternate angles instead of using the altitude of the Sun. Their lessons were based on Eratosthene's story or some related illustrations suggested in the textbook and not based on an explanation of the principle. Also, students measured the Earth's size only by using alternate angles and didn't understand the meaning of the shadow in the experiment. The results of this study show that teachers need to reconstruct the textbook and understand the accurate experimental principle for the students to have a meaningful experience of the experiment on measuring the size of the Earth.

Keywords

measuring the Earth's size;the Sun's altitude;alternate angle;Eratosthenes's measurement of the Earth's size

References

  1. Bogdan, R. C., & Biklen, S. K. (2007). Qualitative research education: A introduction to theories and methods. Boston, MA: Pearson Education Press.
  2. Chae, D. H. (2012). Measuring the earth's size using the sun's altitude and the responses. Journal of the Korean Earth Science Society, 5(1), 88-94.
  3. Creswell, J. W. (1998). Qualitative inquiry and research design: Choosing among five traditions. Thousand Oaks, CA: Sage.
  4. Engelhardt, W., & Zimmermann, J. (1982). Theory of earth science. Cambridge, UK: Cambridge University Press.
  5. Giddings, G. J., & Waldrip, B. G. (1993). Teaching practices, science laboratory learning environment and attitudes in south pacific secondary schools. Paper presented at the annual meeting of the American Educational Research Association, Atlanta, GA.
  6. Giere, R. N. (1988). Explaining science: A cognitive approach. Chicago, IL: Chicago University Press.
  7. Gobert, J. D., & Clement, J. J. (1999). Effect of student-generated diagram versus studentgenerated summaries on conceptual understanding of causal and dynamic knowledge in plate tectonics. Journal of research in science teaching, 26(1), 39-53.
  8. Gunstone, R. F., & Champagne, A. B. (1990). Promoting conceptual change in the laboratory. In E. Hegarty-Hazel (ED.), The student laboratory and the science curriculum. London: Routledge.
  9. Hart, C., Mulhall, P., Berry, A., Loughran, J., & Gunstone, R. (2000). What is the purpose of this experiment? Or can students learn something from doing experiments? Journal of Research in Science Teaching, 37(7), 655-675. https://doi.org/10.1002/1098-2736(200009)37:7<655::AID-TEA3>3.0.CO;2-E
  10. Kim, C. J. (2002). Inference frequently used in earth science. Journal of the Korean Earth Science Society, 23(2), 183-193.
  11. Kim, H. K., Kang, S. J., No, S. G., No, T. H.,& Chae, W. G. (1997). Development and application of concept change teaching model for an effective experiment class. Journal of the Korean Earth Science Society, 17(2), 179-189.
  12. Kim, J. R., Kim, M. S., & Park, Y. R. (2005). An analysis of inquiry tasks in 10th grade science textbook's the Earth unit. Journal of the Korean Earth Science Society, 26(6), 501-510.
  13. Lee, K. H., & Kwon, B. D. (2010). Suggestion of reasoning-based inquiry model embedded in Earth Science phenomena. Journal of the Korean Earth Science Society, 31(2), 185-202. https://doi.org/10.5467/JKESS.2010.31.2.185
  14. Lim, C. H., & Jeong, J. W. (1993). An analysis and problems of elementary school's nature and astronomic field. Journal of the Korean Earth Science Society, 13(2), 247-256.
  15. Oh, P. S. (2007). An analysis of aspect of utilizing scientific model in secondary Earth Science class. Journal of the Korean Earth Science Society, 27(7), 645-662.
  16. The Ministry of Education and Human Resources Development (2007). 2007 revised science curriculum. The Ministry of Education and Human Resources Development.
  17. Woo, M. B., & Cha, H. Y. (2006). Development and application effects of teaching tools for the experiment activities to measure the size of the Earth. Master thesis for Korea National University of Education, 22(4), 165-183.
  18. Yang, I. H., Jeong, J. W., Kim, Y. S., & Joe, H. J. (2006). An analysis of experimental objective∙interaction∙inquiry process about secondary science experiment class. Journal of the Korean Earth Science Society, 27(5), 509- 520.