In this study, the aim is to teach some subjects in General Chemistry lesson by means of computer assisted demonstration experiments and developing a Likert-type valid and reliable scale to analyse the effectiveness of this method on students. Before developing the scale, the current scales had been carefully analyzed, the views of experts were taken, and the first draft of scale was prepared. The validity and reliability studies of the scale were carried out by applying the first draft on 250 students. The total item and remainder item correlations, item discrimination, factor analysis and internal consistency measures were respectively implemented on the scale for a deeper validity and reliability analysis. Scope validity of the scale has been maintained by consulting the specialists. Factor analysis has been conducted for structure validity. According to the results of the analysis, the scale had three subscales. Cronbach alpha coefficients were calculated for all subscales as 0.81, 0.74, and 0.63 respectively and for whole scale as 0.85. The value of Kaiser-Meyer-Olkin is 0.872, Barlet’s value is 950.344. These findings demonstrate that the scale has a valid and reliable structure.
Computer assisted instruction chemistry education third keywords developing scale demonstration experiments
Primary Language | English |
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Journal Section | ARTICLES |
Authors | |
Publication Date | December 24, 2015 |
Published in Issue | Year 2015 Volume: 1 Issue: 3 |