| Autor: |
Dahsah, Chanyah, Coll, Richard K., Sung-ong, Sunan, Yutakom, Naruemon, Sanguanruang, Sudjit |
| Předmět: |
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| Zdroj: |
Journal of Science & Mathematics Education in Southeast Asia; Jun2008, Vol. 31 Issue 1, p1-43, 43p, 5 Graphs |
| Abstrakt: |
The international literature suggests students frequently resort to the use of formulae when solving stoichiometry problems without understanding the concepts. In prior work we identified Thai student alternative conceptions and ability to solve numerical problem for stoichiometry. The results indicate that many Thai students also hold alternative conceptions and that their ability to solve numerical problems is related to their understanding of the concepts. In the present work we describe an intervention consisting of the development of a series of stoichiometry learning units (SLUs) based on a conceptual change approach. The units involve five steps: express ideas, share ideas, challenge ideas, accommodate ideas, and apply ideas. The SLUs were implemented by three volunteer teachers in three Grade 10 science classrooms from three different schools. The findings suggest that the conceptual change approach can be useful in addressing student alternative conceptions, developing student conceptual understanding, and enhancing students' ability to solve numerical problems. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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