356,448 research outputs found

    Using Computer Technology Tools to Improve the Teaching-Learning Process in Technical and Vocational Education: Mechanical Engineering Subject Area

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    This paper discusses the integration of computer assisted instructions (CAI) with traditional class room teaching. It describes a teaching method to bring real-world of industrial work into the classroom that underscores the need to learn fundamental principles while adding excitement and relevance to the experience. This paper presents results of a case study undertaken to understand the effect of computer assisted teaching methodology on learning effectiveness in classroom environment. The effects of computer assisted instructions on different levels of cognition of individual learners have also been evaluated. The computer aided drawing (CAD), computer aided manufacturing (CAM) and computer numerical control (CNC) courses at the Bahrain institute are an integral part of this attempt. These courses emphasize the development of a 3-D geometric computer model and application of this digital database to all phases of the design process. The students make freehand sketches, build computer models, mate assemblies of parts, perform various analysis, create kinematics simulations, generate final design drawings, import engineering drawing as DXF file, generate NC file to build rapid prototypes as shown in the table 1 below. Keywords: Computer Technology, C.N.C and AutoCad Softwar

    Learning with multiple representations: An example of a revision lesson in mechanics

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    We describe an example of learning with multiple representations in an A-level revision lesson on mechanics. The context of the problem involved the motion of a ball thrown vertically upwards in air and studying how the associated physical quantities changed during its flight. Different groups of students were assigned to look at the ball's motion using various representations: motion diagrams, vector diagrams, free-body diagrams, verbal description, equations and graphs, drawn against time as well as against displacement. Overall, feedback from students about the lesson was positive. We further discuss the benefits of using computer simulation to support and extend student learning.Comment: 10 pages, 5 figures, 2 tables http://iopscience.iop.org/0031-912

    Making mathematics phenomenal : Based on an Inaugural Professorial Lecture delivered at the Institute of Education, University of London, on 14 March 2012

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    Mathematics is often portrayed as an 'abstract' cerebral subject, beyond the reach of many. In response, research with digital technology has led to innovative design in which mathematics can be experienced to some extent like everyday phenomena. I examine how careful design can 'phenomenalise' mathematics - that is to say create mathematical artefacts that can be directly experienced to support not only engagement but also focus on key ideas. I argue that mathematical knowledge gained through interaction with suitably designed tools can prioritise powerful reasons for doing mathematics, imbuing it with a sort of utility and offering learners hooks on which they can gradually develop fluency and connected understanding. Illustrative examples are taken from conventional topics such as number, algebra, geometry and statistics but also from novel situations where mathematical methods are juxtaposed with social values. The suggestion that prioritising utility supports a more natural way of learning mathematics emerges directly from constructionist pedagogy and inferentialist philosophy

    The simultaneity of complementary conditions:re-integrating and balancing analogue and digital matter(s) in basic architectural education

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    The actual, globally established, general digital procedures in basic architectural education,producing well-behaved, seemingly attractive up-to-date projects, spaces and first general-researchon all scale levels, apparently present a certain growing amount of deficiencies. These limitations surface only gradually, as the state of things on overall extents is generally deemed satisfactory. Some skills, such as “old-fashioned” analogue drawing are gradually eased-out ofundergraduate curricula and overall modus-operandi, due to their apparent slow inefficiencies in regard to various digital media’s rapid readiness, malleability and unproblematic, quotidian availabilities. While this state of things is understandable, it nevertheless presents a definite challenge. The challenge of questioning how the assessment of conditions and especially their representation,is conducted, prior to contextual architectural action(s) of any kind

    How does a bicycle work? A new instrument to assess mechanical reasoning in school aged children

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    This study demonstrated that a brief interview can reveal the mechanical reasoning that could not be assessed via the Bicycle Drawing Test. This study, conducted on 190 children (6 to 11 years old), shows that mechanical reasoning improves with age. It shows correlations with spatial reasoning and motor control, and with visual reasonin

    Pembangunan CD ROM interaktif bagi tajuk ECG library interactive

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    Pembangunan perisian pengajaran dan pembelajaran berkomputer merupakan era baru dalam penyediaan bahan pengajaran bagi sesuatu matapelajaran. Kajian pembangunan perisian interaktif ini adalah untuk menilai dan menguji kebolehan serta keupayaan di dalam membangunkan sesebuah perisian multimedia interaktif bagi mata pelajaran Sistem Klinikal Gunaan khusus untuk pelajar Diploma Elektronik Perubatan sesi 2003/2004 di Politeknik Sultan Salahuddin Abdul Aziz Shah, Shah Alam Selangor. Kajian ini meliputi aspek mesra pengguna, kesesuaian paparan maklumat, kesesuaian unsur motivasi dan peningkatan daya kognitif. Metadologi kajian ini berdasarkan soal selidik yang diedarkan kepada 34 orang pelajar yang sedang mengambil matapelajaran ini. Penganalisan data menggunakan SPSS versi 11.5 dan dapatan kajian dianalisis dengan skor min. Hasil dapatan kajian merujuk kepada analisis data yang didapati. Perisian interaktif ini dapat diterima oleh pelajar dari segi mesra pengguna, kesesuaian paparan maklumat, kesesuaian unsur motivasi dan peningkatan daya kognitif di dalam proses pengajaran dan pembelajaran mereka. Diharap CD interaktif ini boleh dijadikan sebagai satu alternatif baru dalam meningkatkan proses pengajaran dan pembelajaran serta mendedahkan pelajar terhadap penggunaan komputer dan teknologi maklumat

    Development of the premixing injector in burner system

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    The alternative fuel is good attention especially for renewable and prevention energy such as biodiesel. Biodiesel fuel (BDF) has a potential for external combustion. BDF is one of the hydrocarbon fuels. Palm oil Biodiesel is free from sulfur and produced by esterification and transesterification reaction of vegetable oil with low molecular weight alcohol, such as ethanol or methanol. The objectives of this research are design the mixing injector fuel and water-fuel emulsion with air for open burner and analyze the behavior of mixture spray formation between fuel (DF and BDF) and water-fuel emulsion. Premix injector use for external combustion especially open burner system. The disadvantages of BDF are high toxic emissions such as NOx, CO and particular matter (PM) and but it can reduced the performance of burner system. High toxic emission can be solved by using a new concept injector with mixing fuel-water emulsion and air. The additional water for combustion process can reduce the NOx emissions, soot, and the flame temperature. This research focuses the Spray angle, penetration, and flame length with secondary and without secondary air. CPO biodiesel has longer penetration length and spray area than diesel, but the spray angle is smaller than diesel. The different of flame Image between pure fuel and water mix with fuel is the flame color. Water mix with fuel has brightness color and shorter flame than pure fuel
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