The purpose of this study was to explore the impact a specific socio-scientific inquiry (SSI) unit has on student achievement and attitudes over the course of two years with two different implementations of the unit. Specifically, this study addressed the following research question: What impact does participation in an SSI unit have on student…

Only recently has cognitive load theory been applied in conceptual change approaches. To the authors' knowledge, theirs is the first study to examine the effects on students' cognitive load of an approach contrary to a refutation text design. The authors combined computer and textbook instruction with involving alternative conceptions (ACs) to…