This paper explores how pre-service student teachers, in New South Wales Australia, integrate new global education into their existing disciplinary knowledge frameworks. Student teachers learning to teach secondary history and geography or business studies, or primary student teachers learning to teach society and its environment bring with them existing knowledge schemas based on their undergraduate disciplinary study, prior experiences and skills. It was hypothesised that new global education knowledge will interact with existing knowledge schemas in complex and interrelated ways. The paper reports on surveys of 204 pre-service students on the major understandings, concepts, skills and attitudes of global education. The paper finds that new global knowledge is additive to existing knowledge frameworks in various ways for secondary student teachers and integrative for primary student teachers. The paper explores the community of practice lens of subject discipline prior learning and the role it plays in the way student teachers respond to new subject matter. The paper discusses how disciplinary study integrates global education knowledge and identifies the implications of this for developing teacher education courses and for teacher professional development and learning.

No abstract

No abstract

A number of sites around the United States have used activated carbon (AC) amendments to remedy contaminated sediments. Variation in site-specific characteristics likely influences the long-term fate and efficacy of AC treatment. The long-term effectiveness of an AC amendment to sediment is largely unknown, as the field performance has not been monitored for more than three years. As a consequence, the focus of this research effort was to evaluate AC’s long-term (6–10 yr) performance. These assessments were performed at two pilot-scale demonstration sites, Grasse River, Massena, New York and Canal Creek, Aberdeen Proving Ground (APG), Aberdeen, Maryland, representing two distinct physical environments. Sediment core samples were collected after 6 and 10 years of remedy implementation at APG and Grasse River, respectively. Core samples were collected and sectioned to determine the current vertical distribution and persistence of AC in the field. The concentration profile of polychlorinated biphenyls (PCBs) in sediment pore water with depth was measured using passive sampling. Sediment samples from the untreated and AC-treated zones were also assessed for bioaccumulation in benthic organisms. The data collected enabled comparison of AC distribution, PCB concentrations, and bioaccumulation measured over the short- and long-term (months to years).