Abstract
The purpose of this study was to investigate the effects of Microcomputer Based Laboratory (MBL) on the middle school students` graphing skill and science process skill in Earth Science classes. MBL teaching materials for inquiry-based instructions were developed to teach five experimental topics related to the middle school `Earth Science.` Thirty three middles school students participated in this study, and the pre- and post-tests were conducted. Results indicated as follow: First, MBL classes were effective in developing the graphing skill of middle school students. They were efficient both in graph construction and graph interpretation, especially in data transformation. Second, MBL classes were effective in helping participants to use science process skills, especially, in the subordinate areas including formulating hypotheses, making operational definition, graphing, and interpreting data.
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