Describes a technique that can be used to construct variables from clinical interviews that can be used in quantitative analyses. The technique involves the representation of each proposition a student uses in terms of a standard set of underlying predicates, concepts, and relationships among concepts. (JN)

This study aims to add to the growing research related to the implementation of non-traditional writing tasks in classrooms to encourage science literacy. A secondary reanalysis methodology was employed to review student interviews collected as a part of several individual studies during a ten year research program. This method established an…

Presents a logical analysis of three vector concepts (position, displacement, velocity) in terms of their constituent characteristics and shows how they can be used to structure an empirical investigation into students' prior knowledge about these characteristics. Reports results of students' (N=20) conceptions about the vector characteristics…

Argues that naturalistic research is appropriate for studying science education. Stages of naturalistic research are explained and illustrated with material from NSF-sponsored Case Studies in Science Education. Problems in traditional research methods are presented as justification for inductive models or models based on multiple methods,…

To reduce curricular fragmentation in science education, reform recommendations include using common, unifying themes such as scaling to enhance curricular coherence. This study involved 215 participants from five groups (grades 5, 7, 9, and 12, and doctoral students), who completed written assessments and card sort tasks related to their…