| Autor: |
Dong-Hyun Chae, Je-Jun Han |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Journal of The Korean Association For Research In Science Education. 33:639-649 |
| ISSN: |
1226-5187 |
| DOI: |
10.14697/jkase.2013.33.3.639 |
| Popis: |
The purpose of this study is to figure out how teachers conduct an experiment in measuring the size ofthe Earth and how students recognize it. For this study, an in-depth interview was conducted one week after thelesson on the experiment about measuring the size of the Earth. The participants were five secondary school teachersand five secondary school students. The in-depth interview was recorded and transcribed. The result of the interviewwas drawn through an inductive categorized analysis method. As a conclusion of this study, the teachers taught thestudents the lesson using alternate angles instead of using the altitude of the Sun. Their lessons were based onEratosthene's story or some related illustrations suggested in the textbook and not based on an explanation of theprinciple. Also, students measured the Earth's size only by using alternate angles and didn't understand the meaningof the shadow in the experiment. The results of this study show that teachers need to reconstruct the textbook andunderstand the accurate experimental principle for the students to have a meaningful experience of the experiment onmeasuring the size of the Earth. Key words: measuring the Earth's size, the Sun's altitude, alternate angle, Eratosthenes's measurement of theEarth's size.Jeonju National University of Education |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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