Problem-Based Learning as an Effective Strategy for Science Teacher Professional Development

Abstract

The Problem-Based Learning (PBL) Project for Teachers included three days of professional development using PBL to deepen teachers’ content knowledge. Teachers identified the content area in which they wished to work from a list of choices. They worked in facilitated groups of from five to nine participants to solve rich, ill-structured problems. Content knowledge was assessed based on teachers’ written responses to at least one general question and one application question in which they explained some everyday phenomena. Teachers responded to these questions two months before and at the end of the professional development; 80.5 percent of the 41 middle and high school teachers who participated showed improved content knowledge. We also examined the patterns in teachers’ incoming content knowledge and changes in content knowledge. The data indicate that the PBL approach used here was effective in improving the content knowledge of teachers independent of demographic factors and type and degree of incoming content knowledge.     

Guy talk: contesting masculinities in HIV prevention education with Canadian youth

This paper takes up the concern that sexual health programs targeting adolescents may actually increase HIV risk among youth by reinforcing dominant versions of masculinity that portray males as sexually irresponsible and unconcerned about their health. If a key aim in HIV prevention education is a renegotiation of high‐risk behavioral norms, an important consideration is the ways young people resist stereotypical gender norms that can lead to risky sexual practices. From this perspective, opening up spaces for the expression of counter‐hegemonic masculinities may be an important health prevention strategy. In a study conducted in three urban Toronto high schools, we explore the ways students in mixed‐sex groups supported or challenged dominant discourses of masculinity expressed through three themes: notions of male sexuality as unrestrained and unrestrainable; narrow definitions of sex; and concepts of ‘risk’ and resistance to condom use. We argue that designing HIV prevention programs that begin with the exploration of alternative masculinities may be one way to fashion a framework for gender relations that can offer youth more effective prevention strategies.     

Associative foundation of causal learning in rats

Are humans unique in their ability to interpret exogenous events as causes? We addressed this question by observing the behavior of rats for indications of causal learning. Within an operant motor–sensory preconditioning paradigm, associative surgical techniques revealed that rats attempted to control an outcome (i.e., a potential effect) by manipulating a potential exogenous cause (i.e., an intervention). Rats were able to generate an innocuous auditory stimulus. This stimulus was then paired with an aversive stimulus. The animals subsequently avoided potential generation of the predictive cue, but not if the aversive stimulus was subsequently devalued or the predictive cue was extinguished (Exp. 1). In Experiment 2, we demonstrated that the aversive stimulus we used was in fact aversive, that it was subject to devaluation, that the cue–aversive stimulus pairings did make the cue a conditioned stimulus, and that the cue was subject to extinction. In Experiments 3 and 4, we established that the decrease in leverpressing observed in Experiment 1 was goal-directed instrumental behavior rather than purely a product of Pavlovian conditioning. To the extent that interventions suggest causal reasoning, it appears that causal reasoning can be based on associations between contiguous exogenous events. Thus, contiguity appears capable of establishing causal relationships between exogenous events. Our results challenge the widely held view that causal learning is uniquely human, and suggest that causal learning is explicable in an associative framework.     

International summer programs

The author presents a longitudinal case study of a mathematically and verbally gifted child from early years to young manhood focusing on communication behavior and the creative use of a unique learning resource.     

Student Science Teachers' Accounts of a Well-Remembered Event About Classroom Management

Journal of Science Teacher Education -     

Competencies and interest in a problem-focused undergraduate research methods criminal justice course: Two assessments

This study reports on two efforts, in a problem-centered undergraduate criminal justice research methods course, to gauge students' skills in understanding graphical data display and quasi-experimental designs. The problems addressed were drunk driving and handguns. Results show a moderate level of skill by students at course conclusion, but the weak quasi-experimental design precludes confirming the skills were acquired because of the course itself. Students did, however, report increased interest in the two problems because of course coverage. The approach described here may help bridge the gap between skill vs. content vs. process centered views on criminal justice as a liberal arts major.     

SELECTED ASPECTS OF PUBLIC SCHOOL PROGRAMS FOR THREE AND FOUR YEAR‐OLDS IN ALABAMA,GEORGIA, MISSISSIPPI,AND TENNESSEE

Abstract

The perceptions of 28 preservice early childhood teachers about the social and cognitive competence of 68 preschool children were examined. Hierarchical regression analyses revealed gender, age, and family socioeconomic sta?us biases in preservice teachers’ perceptions of children's social and cognitive competence. Qualitative data from focus group discussions with preservice teachers also supported these findings. In addition, children's actual social and cognitive competence, while not the most significant, also uniquely and significantly contributed to preservice teachers’ perceptions of children's social and cognitive competence. This may indicate that preservice teachers are likely struggling with their biases as they involve themselves in their teacher preparation experiences, focused on developing more accurate views of children's social and cognitive competence. Both race/ethnicity and temperament contributions were not found, possibility due to the limited sample used.