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1.
Many introductory biochemistry students have problems understanding metabolism and acquiring the skills necessary to study
metabolic pathways. In this paper we suggest that this may be largely due to the use of a traditional teaching approach which
emphasises memorisation rather than understanding. We present an alternative approach to teaching carbohydrate metabolism
which is designed to promote understanding of pathways. The approach also enables regular monitoring of, and reflection on,
student progress and the identification of student reasoning and conceptual difficulties through the use of specially designed
problems. Preliminary results are presented giving examples of specific student difficulties and the extent to which they
were addressed by the alternative instructional approach. A qualitative evaluation of the approach is also presented.
Specializations: metal accumulating plants biochemical education.
Specializations: physics education, conceptual development, instructional design, improvement of tertiary science education. 相似文献
2.
MS. Christine Chin DRS. Ngoh-Khang Goh Lian-Sai Chia Kam-Wah Lucille Lee DR. Kay-Cheng Soh 《Research in Science Education》1994,24(1):41-50
The use of problem-solving in science instruction implies a change in the teacher's role from dispensing content information
to encouraging critical reflective thinking in the student. For problem-solving to become an integral part of the science
curriculum, teachers must make it the focus of their instruction. This study investigated the extent to which pre-service
primary teachers used the problem-solving approach in their science instruction. It also identified the factors affecting
their efforts to teach science using this approach. The issues considered are important in whether problem-solving becomes
part of the science curriculum, as teaching behaviour influences student learning outcomes.
Specializations: science eeducation
Specializations: educational measurement, research methodology. 相似文献
3.
DR REBBI MUSTAFA ALIAN Associate Professor in Library Science 《International Information and Library Review》1998,30(4):289-301
The main objective of this research paper is to introduce the concept of medical libraries, and to survey the present status of medical libraries in the State of Bahrain in terms of their history, collections, staff, and services. The study gives a general background about the State of Bahrain and its libraries. It also discusses the main problems facing medical libraries in Bahrain. Finally, the study gives some recommendations for developing medical libraries in Bahrain. Personal interviews and documents were used for collecting the information. 相似文献
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DR. Paul Gardner 《Research in Science Education》1992,22(1):140-148
The notion that technology is the application of science to the making of artefacts is a widely-held, persistent and influential
view. Considerable scholarly work has been done during the past quarter century to refute it on the grounds that it is historically
and ontologically inaccurate. It is a view which fails to recognise the contribution of non-scientific factors to technological
development,which neglects the reverse contribution of technology to science, and which offers a superficial account of the
process of application. This paper focusses on this last point, and argues that in those cases where science is applied to
technology, the application process is usually exceedingly complex. The process involves the selection of appropriate knowledge,
the adoption of differing criteria and the translation and re-shaping of knowledge to make it amenable to the technologist.
The issue has important implications for the school curriculum.
Specializations: science/technology education, technology teacher education, educational evaluation. 相似文献
8.
Abstract This article represents a meta-analysis of three research KEYWORDS projects undertaken recently at the National Foundation for Educational children in Research. The projects were discrete but resultant data showed that they care; had a common focus: ways in which schools do or might accommo-disaffection; date more effectively the needs of a range of pupils who are at risk of inclusion; being denied the opportunity to experience the ‘normality’ of the cur-special riculum offered by schools in England and Wales. The pupils whose educational experiences were studied had special educational needs, and/or were needs ‘disaffected’, and/or were in the public care. While their circumstances were, thus, ostensibly various, analysis showed that they were underpinned by a common set of needs which, unaddressed by the education system, resulted in the exclusion of the pupils. Strategies that effectively nurtured pupils’ inclusion were found to be applicable across the client group. 相似文献
9.
The emerging concept of thread-based microfluidics has shown great promise for application to inexpensive disease detection and environmental monitoring. To allow the creation of more sophisticated and functional thread-based sensor designs, the ability to better control and understand the flow of fluids in the devices is required. To meet this end, various mechanisms for controlling the flow of reagents and samples in thread-based microfluidic devices are investigated in this study. A study of fluid penetration in single threads and in twined threads provides greater practical understanding of fluid velocity and ultimate penetration for the design of devices. “Switches” which control when or where flow can occur, or allow the mixing of multiple fluids, have been successfully prototyped from multifilament threads, plastic films, and household adhesive. This advancement allows the fabrication of more functional sensory devices which can incorporate more complex detection chemistries, while maintaining low production cost and simplicity of construction. 相似文献
10.
"Paper-based microfluidics" or "lab on paper," as a burgeoning research field with its beginning in 2007, provides a novel system for fluid handling and fluid analysis for a variety of applications including health diagnostics, environmental monitoring as well as food quality testing. The reasons why paper becomes an attractive substrate for making microfluidic systems include: (1) it is a ubiquitous and extremely cheap cellulosic material; (2) it is compatible with many chemical/biochemical/medical applications; and (3) it transports liquids using capillary forces without the assistance of external forces. By building microfluidic channels on paper, liquid flow is confined within the channels, and therefore, liquid flow can be guided in a controlled manner. A variety of 2D and even 3D microfluidic channels have been created on paper, which are able to transport liquids in the predesigned pathways on paper. At the current stage of its development, paper-based microfluidic system is claimed to be low-cost, easy-to-use, disposable, and equipment-free, and therefore, is a rising technology particularly relevant to improving the healthcare and disease screening in the developing world, especially for those areas with no- or low-infrastructure and limited trained medical and health professionals. The research in paper-based microfluidics is experiencing a period of explosion; most published works have focused on: (1) inventing low-cost and simple fabrication techniques for paper-based microfluidic devices; and (2) exploring new applications of paper-based microfluidics by incorporating efficient detection methods. This paper aims to review both the fabrication techniques and applications of paper-based microfluidics reported to date. This paper also attempts to convey to the readers, from the authors' point of view the current limitations of paper-based microfluidics which require further research, and a few perspective directions this new analytical system may take in its development. 相似文献