BIOTECHNOLOGY & BIOTECHNOLOGICAL EQUIPMENT, vol.23, pp.14-18, 2009 (SCI-Expanded)
In our study it was aimed to investigate secondary school students' understandings of some concepts about the unit of "Basic Components of Living Things" in biology, the relationship between their conceptual understanding and usable longer term retention of their knowledge, and the effect of misconceptions held by students over longer term retention of their knowledge. The results of achievement test itself imply that without any effort the longer term retention of students' knowledge fade away over time.