ملخص الدراسة
سعت الدراسة تعرف اثراستعمال الأنموذج المعملي في تصحيح المفاهيم الرياضية شائعة الخطأ لدى طلاب الصف الأول المتوسط بالإجابة عن السؤال "ما اثر استعمال الأنموذج المعملي في تصحيح المفاهيم الرياضية شائعة الخطأ لدى طلاب الصف الأول المتوسط" ولتحقيق هدف الدراسة وضعت الفرضية الصفرية "لايوجد فرق ذو دلالة إحصائية عند مستوى الدلالة (0.05) بين متوسطي درجات طلاب المجموعة التجريبية الذين يدرسون المادة المقررة باستعمال الأنموذج المعملي وطلاب المجموعة الضابطة الذين يدرسون المادة نفسها باستعمال الطريقة الاعتيادية في اختبار تشخيص المفاهيم الرياضية شائعة الخطأ" واختيرت ثانوية النهضة للبنين من مركز محافظة القادسية عشوائياً ميداناً لإجراء التجربة ومنها اختيرت عشوائياً شعبتين من الشعب الثلاث للصف الأول ، لتكون شعبة (أ) المجموعة التجريبية وعدد طلابها (33) طالباً وتدرس باستعمال الأنموذج المعملي في حين اصبحت شعبة (ب) تمثل المجموعة الضابطة وعدد طلابها (31) طالباً وتدرس باستعمال الطريقة الاعتيادية ، وبعد استبعاد الطلاب الراسبين البالغ عددهم (4) في المجموعة التجريبية و(3) في المجموعة الضابطة بلغ عدد طلاب المجموعة التجريبية بصورتها النهائية (29) طالباً ، أما المجموعة الضابطة فاصبح عدد طلابها (28) طالباً ، وتم التحقق من التكافؤ بين مجموعتي الدراسة في متغيرات التحصيل السابق في مادة الرياضيات والتحصيل العام للصف السادس الابتدائي واختبار الذكاء والعمر الزمني ، وطبقت التجربة في الفصل الدراسي الثاني من العام الدراسي 2009-2010 ، وفي نهاية الفصل الدراسي تم اختبار مجموعتي الدراسة باستعمال اختبار لتشخيص المفاهيم الرياضية شائعة الخطا لديهم بعد أن جرى التحقق من صدقه وثباته وحساب القوة التمييزية ومعامل الصعوبة وفعالية البدائل لفقراته ، ثم عولجت نتائج الاختبارإحصائيا باستعمال عدد من الوسائل الإحصائية مثل الاختبار التائي لعينتين مستقلتين ومعادلة كيودور ريتشاردسون -20 فضلاً عن تحليل التغايرالمصاحب ، وأظهرت النتائج تفوق طلاب المجموعة التجريبية التي درست باستعمال الأنموذج المعملي على طلاب المجموعة الضابطة التي درست باستعمال الطريقة الاعتيادية في تصحيح المفاهيم الرياضية شائعة الخطأ لديهم ، والتوصية باستعمال الأنموذج المعملي في تدريس المفاهيم الرياضية في المرحلة المتوسطة وتدريب المدرسين على كيفية استعماله عن طريق الدورات التدريبية ، فضلاً عن بعض المقترحات مثل إجراء دراسات تتناول الانموذج المعملي في متغيرات ومراحل دراسية اخرى
The dispersion of supported Pt and Pt–Ir reforming catalysts have been studied, after treatment with oxidative and reducing atmosphere. Methylcyclohexane dehydrogenation reaction in the absence of hydrogen was used as a test reaction. An attempt was made to relate the behavior of the catalysts upon subject to reaction, to the dispersion of the same type of catalysts upon treatment with similar atmosphere and temperatures which appeared in literature. The total conversion of reaction can be explained by a change in metal dispersion. Thus, methylcyclohexane dehydrogenation reaction appears to be a really “structure sensitive” reaction.
The toluene yield increases as the oxidation temperature i
... Show MoreThat the essential contribution of this research is a description of how complex systems analysis service of the properties of the queue in Baghdad Teaching Hospital using a technique network is techniques method (Q - GERT) an acronym of the words:
Queuing theory _ Graphical Evaluation and Review Technique
Any method of assessment and review chart where you will be see the movement flow of patients within the system and after using this portal will be represented system in the form of planned network probabilistic analysis and knowledge of statistical distributions appropriate for times of arrival and departure were using the program ready (Win QSB) and simulatio
... Show MoreEstimation the unknown parameters of a two-dimensional sinusoidal signal model is an important and a difficult problem , The importance of this model in modeling Symmetric gray- scale texture image . In this paper, we propose employment Deferential Evaluation algorithm and the use of Sequential approach to estimate the unknown frequencies and amplitudes of the 2-D sinusoidal components when the signal is affected by noise. Numerical simulation are performed for different sample size, and various level of standard deviation to observe the performance of this method in estimate the parameters of 2-D sinusoidal signal model , This model was used for modeling the Symmetric gray scale texture image and estimating by using
... Show MoreThis paper examines the impact of the organizational culture prevailing at the university center, Ali KafiTindouf, on the quality of the educational service provided by the university center Ali KafiTindouf from the point of view of the teachers of the center. The questionnaire method was used to determine the effect between the variables studied, by the distribution of 33 questionnaires on a random sample of the study community.
The study found that the organizational culture prevailing at the university center of Ali KafiTindouf contributed to reaching higher levels in the awareness and quality of the educational service provided by the teachers of the center.<
... Show MoreThe current article focuses on studying the social organization reality of the Iraqi society; it aims to construct an Iraqi organized personality that believe in the principles of Islamic religion by making use of the sociology thoughts in explaining the strength of social organization, and the causes of social deviance in attempt of decreasing the deviance and strengthening the cohesion of Iraqi character.
The researchers put forward some questions: to what extent the western theoretical pattern can succeed in explaining the social organization of the Iraqi society? What is the more appropriate western theory for diagnosing the cohesion and deviance of the society? What is the s
... Show MoreAbstract:
Due to the importance of technology and the accompanying changes of the environment affecting companies that use the technology mainly in their work, especially as most companies live in an unstable dynamic environment, which motivated the researchers to choose the International Company for smart card (Keycard) as a field of research and find ways to them to face Those changes.
The problem of the study was "limited attention to the components of technological change", which included research and development, innovation and information technology, which had an impact on the design decisions of the process (process selection, cust
... Show MoreThe research aimed to study the political discourse in the drawings of Faisal Laibi, where it shed light on the discourse in the plastic field - concepts and applications, as well as the representations of discourse in the modern and contemporary plastic field, and to study the experience of Faisal Laibi and the uniqueness of his style in artistic performance. The site has collected more than (210 works) whose sources varied between the artist's website himself on the social network, the Internet, and the published paper publications. The researcher conducted an analysis of some of the drawings to achieve the research objectives. Among the most important results he reached:
1. The political discourse of Faisal Laibi is to direct these
In recent years, non-oil primary balance indicator has been given considerable financial important in rentier state. It highly depends on this indicator to afford a clear and proper picture of public finance situation in term of appropriate and sustainability in these countries, due to it excludes the effect of oil- rental from compound of financial accounts which provide sufficient information to economic policy makers of how economy is able to create potential added value and then changes by eliminating one sided shades of economy. In Iraq, since, 2004, the deficit in value of this indicator has increased, due to almost complete dependence on the revenues of the oil to finance the budget and the obvious decline of the non-oil s
... Show MoreIn a resource-limited world, there is an urgent need to develop new economic models, from the traditional unsustainable industrial model of product consumption and disposal, to a new model based on the concepts of sustainability in its comprehensive sense, the so-called circular economy, using fewer resources in manufacturing processes and changing practices in product disposal to waste, by removing its use, recycling and manufacturing to start another manufacturing process. In an era of intense competition in domestic and global markets, the importance of the circular economy is highlighted in its ability to strengthen the competitiveness of enterprises in those markets, by reducing the cost and increasing the quality of the pro
... Show MoreThe study aims at measuring the dimensions of binding and non-binding social responsibility and its relation to the organizational performance in telecommunication companies in the Republic of Yemen using analytical descriptive approach and questionnaire as a main tool for data collection and comprehensive inventory method.
It has been found that there is a positive effect and significant moral relation between social responsibility with its binding and non-binding dimensions and the organizational performance of telecommunication companies in the Republic of Yemen at a level of significance below (0.05). It has also been found that the correlation between the non-binding social responsibilit
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