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Direct linkDemircioglu, Gokhan – Asia-Pacific Forum on Science Learning and Teaching, 2009
This study examined whether the application of conceptual change texts are effective before or after the instruction on 10th grade students' conceptual understanding and alternative conceptions about acids and bases. The study was conducted with 76 10th grade students from three classes of a chemistry course taught by the same teacher. One of the…
Descriptors: Experimental Groups, Control Groups, Achievement Tests, Chemistry
Download full textKiger, Derick M. – Florida Journal of Educational Administration & Policy, 2008
Public schools face raised performance expectations on group-administered achievement tests. In response, educators have implemented various preparation strategies to ready students. However, the research community largely ignores the impact of setting on test performance. This randomized field trial assesses whether or not there were significant…
Descriptors: Grade Point Average, Group Testing, Educational Environment, Statistical Significance
