Given that there is no universal way to measure implementation fidelity, instructional designers developing instructional innovations may find themselves faced with the challenge of determining the extent to which teachers' implementation of an instructional model is faithful. This article contends that a faithful implementation is one in…

This article describes an approach to developing student reading materials that support middle school learners in a project-based, inquiry curriculum for grades 6 through 8. Reading materials are designed to encourage sense making beyond the classroom, as students read and write about science as it takes place in a classroom and as it occurs in…