Through the lens of science capital, this research aims to detect the key factors and their main effects in identifying students with science-related career expectations. A machine learning approach (i.e., random forest) was employed to analyze a dataset of 519,334 15-year-old students from the Programme for International Student Assessment (PISA)…

Previous research has demonstrated the potential of examining log-file data from computer-based assessments to understand student interactions with complex inquiry tasks. Rather than solely providing information about what has been achieved or the accuracy of student responses ("product data"), students' log files offer additional…

This quasi-experimental study investigated the effects on 558 grades five and six students of three different teaching conditions: the "classical" model of conceptual change (for which cognitive conflict is considered as a precondition to the transformation of knowledge), the "prevalence" model of conceptual change (in which…

This study investigates how affective and self-related factors impact participation in science learning and environmental awareness and responsibility. Using PISA 2006 datasets from Taiwan and Canada having similar level of science competency, the model for this study verifies and expands an earlier model by examining the relationships among…

Science educators are confronted with the challenge to accommodate in their classes an increasing cultural and linguistic diversity that results from globalization. Challenged by the call to work towards valuing and keeping this diversity in the face of the canonical nature of school science discourse, we propose a new way of thinking about and…

Some ability to comprehend deep time is a prerequisite for understanding macroevolution. This study examines students' knowledge of deep time in the context of seven major historical and evolutionary events (e.g., the age of the Earth, the emergence of life, the appearance of a pre-modern human, "Homo habilis"). The subjects were 126…

Carried out an investigation to identify conceptions of some components of worldview held by science student teachers (n=48) in a South African context. Explores relationships among worldviews, student characteristics, and scientific concepts. Reports that students' conceptions of time and distance were nonmechanistic and psychologically bound and…

Investigated relationships between physics achievement and language of instruction where instruction was in the second language of both students and teachers. Grade 10 subjects (N=176) studied light/sound in either Chinese (N=90) or English (N=86). No differences in achievement, students' motivation, and time spent in physics were found.…

Investigated influence of sex-related contextual nature of tasks (male-related, female-related, and content-free tasks) and perceived difficulty of these tasks on logical reasoning of Nigerian high school students (N=70). Results indicated that males scored higher than females on male-related tasks and females scored higher on female-related…