When students learn scientific theories that conflict with their earlier, naive theories, what happens to the earlier theories? Are they overwritten or merely suppressed? We investigated this question by devising and implementing a novel speeded-reasoning task. Adults with many years of science education verified two types of statements as quickly…

In this study we describe the support provided by a biology teacher during learning using a web-based research simulation that makes use of authentic research practices in genetics, including the use of a heuristic strategy to compare mutated and normal versions of a character at all the organisational levels. Authentic scientific practices…

Academic learning experiences provided during a unit on genetics were examined in this case study report of two honors biology classes. It was conjectured that the nature of students' work and how it is handled by teachers affects how students attend, how they process information, what skills they practice, how they are evaluated and ultimately…