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A practical test instrument was developed to assess students' attainment of skills associated with problem analysis and planning
experiments, collecting information, organising and interpreting information, and concluding. Students verbalised their thoughts
as they worked on the task and their performance was videotaped for analysis. Data collected from Year 7, 10 and 12 science
students illustrate the development of investigation skills and reveal important areas of student weakness.
Specialisations: Science teacher education, development of problem-solving expertise, concept development and conceptual change, assessment
of laboratory work.
Specialisations: Chemistry education, concept development and conceptual change, role of laboratory work. 相似文献
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This article initially outlines a procedure used to develop a written diagnostic instrument to identify grade-11 and -12 students' misconceptions and misunderstandings of the chemistry topic covalent bonding and structure. The content to be taught was carefully defined through a concept map and propositional statements. Following instruction, student understanding of the topic was identified from interviews, student-drawn concept maps, and free-response questions. These data were used to produce 15 two-tier multiple-choice items where the first tier examined content knowledge and the second examined understanding of that knowledge in six conceptual areas, namely, bond polarity, molecular shape, polarity of molecules, lattices, intermolecular forces, and the octet rule. The diagnostic instrument was administered to a total of 243 grade-11 and -12 chemistry students and has a Cronbach alpha reliability of 0.73. Item difficulties ranged from 0.13 to 0.60; discrimination values ranged from 0.32 to 0.65. Each item was analyzed to ascertain student understanding of and identify misconceptions related to the concepts and propositional statements underlying covalent bonding and structure. 相似文献
44.
While constructivism has emerged as a major reform in science education from the last decade, wide-spread adoption of constructivist
practices in school laboratories and classrooms is yet to be achieved. If constructivist approaches are to be utilised more
widely, teachers will need to accept a more active and constructivist role in their own pedagogical learning. One experienced
junior science teacher was able to implement constructivist approaches in her classroom by using a personally constructed
metaphor to guide her practice.
Specializations: science education, teaching of thinking, professional development.
Specializations: constructivism, professional development. 相似文献
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Many school students experience difficulty in conducting science investigations (Hackling & Garnett, 1991; Murphy, 1988).
Students in Western Australia have poorly developed skills of problem analysis, planning and carrying out controlled experiments,
basing conclusions only on obtained data, and recognising limitations in the methodology of their investigations. This paper
compares the work of 10 expert scientists and 10 Year 12 science students as they conducted a laboratory based investigation.
The results provide insights into expertise in science investigation skills.
Specializations: Science teacher education, development of problem-solving expertise, concept development and conceptual change, assessment
of laboratory work.
Specializations: Chemistry education, concept development and conceptual change, role of laboratory work. 相似文献
48.
Increased opportunities for assessment and intervention, consultation, and program evaluation in early childhood education are suggested as roles that the school psychologist should develop to facilitate effective parent involvement in a child's education. A review of the literature on parent involvement in early childhood special education is provided. The current federal guidelines, rationale, definitions of parent involvement, and strategies for evaluating parent involvement are reviewed. 相似文献