The Teachers' and Students' Perceptions on Lectures and Experiments of Law of Definite Proportion in Middle School Science Classes

Han, Gam-Bong; Min, Hee-Jung; Paik, Seoung-Hey

doi:10.5012/jkcs.2012.56.1.144

Title & Authors

The Teachers' and Students' Perceptions on Lectures and Experiments of Law of Definite Proportion in Middle School Science Classes
Han, Gam-Bong; Min, Hee-Jung; Paik, Seoung-Hey;

Abstract

In this study, science teachers' and students' perceptions were searched on lectures and experiment of law of definite proportion in middle school science classes. For this study, the three teachers' lessons were observed and recorded, following interviews related to teachers' perceptions on the lessons and experiments. Also, We analyzed students' science scores, cognitive levels, science attitude, experimental reports, etc. According to the results, the three teachers had different focuses in the lectures. Chemistry teachers accentuated calculation of proportions and application rather than basic conceptions. But the students could not understand basic conceptions properly. The teachers spend long time to explain experimental procedures by assuming a low performance level of students in experimental classes. And the teachers had negative perceptions about error of results. The students could not understand the experiment results well, tried to manipulate data artificially, and had negative perceptions about error of results like the teachers. We suggested that these problems might be solved by changing teachers' perceptions on school science lectures and experiments.

Keywords

Middle school;Law of definite proportion;Perception on lecture and experiment;

Language

Korean

Cited by

2time(s) in KSCD

1.

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2.

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