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The study identified pre-service teachers concepts§about the identification of organisms as insects. §The students harbored a number of misconceptions§about the identification of organisms as insects and§held non-scientific conceptions about what§constitutes the class Insecta. Many of them did not§have an understanding of classification concepts, and§they focused on visual cues rather than scientific§criteria they had memorized in school. The results§suggest that science educators must consider what§misconceptions may be held about the classification§of organisms and use pedagogical techniques to§challenge their students ideas.