The influence of an integrated PBL format on geography students’ perceptions of their self-directedness in learning

Problem-based learning can be implemented in South African geography teacher education to foster geography students’ self-directed learning skills. The purpose of this longitudinal case study was to determine B.Ed. geography students’ (n = 45) perceptions of their self-directedness in learning in integrated problem-based learning experiences over a three-year period. The study used quantitative and qualitative research methods based on questionnaire application and semi-structured focus group interviews. The students completed a standardized questionnaire at regular intervals with the implementation of integrated problem-based learning experiences in geography modules over a three-year period. Focus group interviews with participants (n = 8) were employed to get a deeper understanding of the results of quantitative data. The results indicated that the geography students’ self-directed learning scores increased with the implementation of an integrated problem-based learning format in geography over the three-year period. The students who measured average, below average and low levels of self-directed learning at the beginning of the study had the highest increase in self-directed learning scores over the three years. The female students’ perceptions of their self-directedness in learning had higher increases in their self-directed learning scores after the problem-based learning interventions when compared to the male students.     

The corporate group as an archaeological unit

Although corporate groups have featured in the anthropological literature for a century, and have more recently been proposed as a potentially useful unit for archaeological analysis (L. Freeman, 1968, In Man the hunter, edited by R. Lee and I. De Vore, pp. 262–267. Aldine, Chicago), application of the concept in archaeology has largely remained hypothetical, and little theoretical modeling has been attempted. In spite of this neglect, it is argued here that the corporate group is potentially one of the most useful and important aspects of the archaeological record that can be dealt with. This conclusion is derived from a detailed ethnoar-chaeological analysis of over 150 households in the Maya Highlands, in which it became apparent that social, economic, and demographic characteristics of households were only loosely associated with a wide variety of material culture expressions. In contrast, such inferences seemed to be much more reliable when households were grouped into “hypothetical corporate groups” and group averages were compared. In addition, theoretical considerations based on economics and on interactions also indicate that the analysis of corporate groups shold be more rewarding and potentially more accurate than the analysis of individual households. Archaeologically, corporate groups can be defined where residential coherency and internal hierarchies are demonstrable. Because corporate groups can be viewed as signaling major changes in the structuring of society, and in the evolution of social and political complexity, the investigation of conditions under which corporate groups emerge should be of major theoretical significance to the entire discipline of archaeology. Moreover, because of the close logical links to material culture and the environment, theoretical modeling should be particularly amenable to archaeological testing. In sum, corporate groups provide an unusually fertile problem area which archaeologists can hope to attack with at least a promising degree of success.     

Addressing seasonal site use through ancient DNA species identification of Pacific salmon at Dionisio Point,Galiano Island,British Columbia

We use ancient DNA analysis to identify Pacific salmon vertebrae to species in order to provide an important line of evidence that helps to establish the timing of seasonal residence at a Pacific Northwest Coast village site. Ancient DNA results from House 2 at Dionisio Point allow a characterization of the salmon fishery. Ten of eleven randomly selected smaller-sized salmon vertebrae were positively identified as sockeye salmon (Oncorhynchus nerka) while only a single pink salmon (Oncorhynchus gorbuscha) was identified. Of the 322 whole salmon vertebrae identified from House 2 occupation deposits during zooarchaeological analysis, 58 percent measure less than 8.0 mm and 70 percent are less than 8.5 mm in maximum transverse diameter. Together with documented aspects of the material record from Dionisio Point, most notably the vertebrate fauna from House 2, the indication that sockeye was the primary focus of the Dionisio Point salmon fishery suggests the site was inhabited during the spring and summer. This approach to the identification of season-specific site occupation has the potential for application over much of the Northeast Pacific.     

Interaction inferences in archaeology and learning frameworks of the maya

Stylistic variation has traditionally been assumed to reflect differential interaction. Although some researchers have questioned this premise, it seems valid as long as interaction is of a cooperative, nonhierarchical type. Other sources of stylistic variation may also exist. This paper examines cooperative learning of crafts within communities to determine what effect various learning contexts might have on the distribution of stylistic elements within communities. Six learning modes are identified: Family-Centered; Corporate; Kin-Extensive; Minimally Structured; Formal-Schooling; and Specialist. Each mode results in a distinctive distribution of stylistic elements. The Kin-Extensive mode is examined in detail using ethnoarchaeological data from the Maya Highlands. We conclude that by focusing on interaction rather than residence, archaeologists can deal with more meaningful problems for the evolution and functioning of past social systems, and these problems can be dealt with more successfully given the nature of archaeological data.     

Planning in the Zürich Region

This examination of the planning structure within the Canton of Zürich has indicated that many of the problems, such as adequate public transportation, the provision of land for industry, and the preservation of land for recreational use overlap existing political boundaries. The solutions, to be effective, must be carried out in a co-ordinated and integrated fashion among the city, the regional, and the cantonal planning groups. Much is being done at all levels to ensure that the future growth of Zürich and its surrounding region will take place in an orderly, aesthetically satisfying fashion. Certainly many serious problems remain to be solved. Nevertheless, the development of Zürich from a Roman settlement to one of the world's most important industrial, financial, commercial, and cultural centres has been accomplished with a minimum of destruction to the city's beautiful site. The preservation of the natural environment is a blessing for the city's inhabitants, having economic     

Inter-site variability in the season of shellfish collection on the central coast of British Columbia

High-resolution stable oxygen isotope analysis of the bivalve Saxidomus gigantea from shell midden sites was applied to identify seasonal patterns of resource procurement on the central coast of British Columbia, Canada. A total of 90 archaeological shells were examined from eight distinct sites spanning a 4500-year period. Combining micro-growth pattern analysis with high-resolution stable oxygen isotope sampling allows for a precise season of collection to be determined in estuarine bivalves recovered from archaeological sites. The results of the stable oxygen isotope analysis provide insights into seasonally structured harvest of S. gigantea (butter clam), which is associated with different types of sites. The results show a variety of patterns, including multi-seasonal collection, intensive seasonal harvesting and casual, supplemental use of butter clams at different locations.     

Where the garbage goes: Refuse disposal in the Maya Highlands

Secondary refuse disposal behavior is structured by three major concerns in the Maya Highlands: economy of effort, potential value of refuse, and potential hindrance by refuse. According to the needs of each household and the nature of the refuse, material slated for discard may be sorted and dumped in separate locations, within or outside compounds. Archaeologists should be aware of this refuse structure in seeking specific types of refuse as well as in comparing refuse from households, or other types of excavational units. At the household level, recognition of the toft area (the area immediately surrounding the household and related outbuildings) is especially important in acquiring representative samples of “hard” types of refuse. Analysis of neighborhood dumps is strongly advocated as one of the more economical, meaningful, and representative ways of dealing with refuse accumulations. Because of several randomizing and dispersive processes operating at the household level, as well as sample size considerations, simple diversity measures are recommended for comparing household assemblages.