In this study, we analyzed the inquiry process of 3rd, 4th and 7th grade science textbooks. The results
of the study were as follows. From the results of analyzing the fundamental research process, observation
and measurement process were emphasized across all grades and courses. The observation process was
composed of ¡®observation by visual sensation¡¯. In the measurement process, the weight measurement was
the most frequent measurement activity. In the higher grade, more operational measurement were found
than simple measurement. The frequency of classification was low, the prediction was mostly ¡®prediction
of experiment result¡¯. Many reasoning process was found in the 7th grade textbooks.
