In Turkish dissertation and research studies on science education, experimental studies
(chiefly quasi-experimental studies) are the most preferred method (Evrekli et al., 2011; Sözbilir &
Kutu, 2008). This situation is an indicator of need to develop and use of more comprehensive and
sound experimental designs. By suggesting the model proposed in this paper, it is believed that
experimental researchers on science education in Turkey might get opportunity to use more powerful
experimental design in their school-wide experimental studies.