The results of survey of secondary school biology students used to access misconceptions about cells are presented. A distinction between conceptions, misconceptions, and nonconceptions is drawn in terms of secondary school biology concepts. The resilience of misconceptions is discussed. (CW)

Describes a diagnostic evaluation to measure the idea of the living cell as the basic unit of life. Describes the classification of student knowledge as common knowledge, wide-spread lack of knowledge, inadequate alternatives, and contradictions. (YP)

Reports on a study which tested eight categories of logical fallacies with secondary students, student teachers, and teachers from Australia, South Africa, and Israel. Results indicate that logical fallacies were exhibited by all the groups. Implications are discussed. (ML)