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Asia-Pacific Forum
on Science Learning and Teaching, Volume 14, Issue 1, Article 2 (Jun., 2013) |
In this study, qualitative data obtained through semi-structure interview, drawing, concept maps and student journals were analyzed by means of NVivo 8.0 package. In accordance with this purpose, the obtained data were encoded and themes were constituted (Miles & Huberman, 1994; Yıldırım & Şimşek, 2005; Çepni, 2010).
In analysis of data related to the research problem; semi-structured interview, drawings and concept maps were used in order to reveal changes in levels of understanding of concepts. Data obtained before and after application were encoded by three researchers. Compliance of encodings performed by three researchers was examined in order to ensure reliability. Cohen’s Kappa coefficient of obtained data was found as 0.72. These codes on which researchers reached a consensus constituted understanding levels concerning each concept. Accordingly, three codes (understanding levels) were detected for Air Resistance, Gravity, Terminal Velocity and Acceleration. Levels were given in an ascending order. Constituted levels were encoded as Level 1, Level 2, and Level 3 and symbolized as L1, L2 and L3. Levels are showed in Table 1.
