Main Subjects : Physics teaching methods

The current study aims at setting efficiency

Shaymaa Maher Alhamdany

College Of Basic Education Research Journal, 2022, Volume 18, Issue 3, Pages 166-194
DOI: 10.33899/berj.2022.175663

The current study aims at setting efficiency of round house strategy on developing life skills for third year students / department of sciences /college of basic education / university of Mosul to reach such an aim, semi experimental was adopted on sample of 46 students from physics branch /third year /department of sciences for academic year 2017/2018 tools and materials of study (life skills) , content analysis survey, teachers guide ,curriculum book of astronomy was chosen according to round house strategy, test of life skills . Statistical analysis was found using means and t test for independent samples. Researcher concluded that there is a stntistical differance at level of 0,05 betwen means of experimental and control groups in post test of life skills. Mean of control group was 9,74 while experimental, s was 22,17 with an increase of 12,43 skills of experimental group was arranged (solving problems and taking decisions 4,61) good communication with others (4,43) creative and critical thinking (4,30) lastly citizenship and self awareness was (4,39) given these findings researcher recommends the use of round house strategy in teaching theoretical and practical materials due to its efficiency in in developing life skills of students

The Reality of the comprehensive quality standards for physics laboratories in preparatory and secondary schools in Mosul

Hussein Zenalabeden Shekhabosh

College Of Basic Education Research Journal, 2021, Volume 17, Issue 2, Pages 167-190
DOI: 10.33899/berj.2021.168495

The research aims to reveal the reality of the comprehensive quality standards for physics laboratories in preparatory and secondary schools in Mosul. The research sample consisted of (33) secondary and intermediate schools in Mosul city for the academic year 2019-2020. To achieve the objective of the research, the researchers prepared a questionnaire from five fields, and in its final form it consisted of (55) items. The reliability of the scale has been validated by appropriate methods. After distributing the research questionnaire, the results showed the following:
Non-compliance of laboratories in Mosul with the principles of total quality in the five journals, and lack of commitment to use the laboratory in education in general.
The researchers concluded that observing the overall quality in the laboratories of the city of Mosul is not considered in addition to the lack of work inside the laboratory, but in schools where there is a laboratory such as distinguished students ’schools, the work is limited to the teacher and the laboratory assistant without involving students in the work on experiments in the laboratory, but their role It is only receive and watch. The researchers recommended several recommendations, including the necessity to observe the overall quality in the laboratory and activate the laboratories inside the Nineveh Governorate in general and the city of Mosul in particular to increase the preparation of follow-up committees to review the development of laboratory work in the Nineveh Governorate to adopt the comprehensive quality standards in the processing and use of laboratories.

Simulation the Absorbance Layer CZTS in Solar Cell for Varying Windows and Buffer Layers for Different Electrical Parameters to Achieve Optimum Performance


College Of Basic Education Research Journal, 2021, Volume 17, Issue 2, Pages 1571-1585
DOI: 10.33899/berj.2021.168558

In this research, we rely on the base cell) MoS2/CZTS/CdS/i-ZnO/ZnO:AL ( which was designed and its outputs are ( Voc=1.1074V, Jsc=29.5356 mA / cm2, FF = 70.29%,  =23.00% ).
In this study, Windows layers were tested using simulation programmed SCAPS-1D about layers (ZnO, SnO2, ZnO:AL), where ( ZnO:AL ) was selected as window layer, and it was found that the best thickness of the windows layer (0.1 μm). Also the different Buffer layers of the basic solar cell ( CdS, ZnO, ZnS, ZnSe, In2S3 ) were tested, where (ZnS) was selected as the )Buffer layer( where it was found that the best thickness was (0.12 μm).
After adopting both the window layers and Buffer layers, the modified cell became )MoS/CZTS/ZnS/i-ZnO/ZnO:AL( the thickness of the Absorption layer was tested, and it was found that the best thickness of the Absorption layer ( CZTS ) was ( 1.5µm ), then the cell output (Voc = 1.0596V, Jsc=28.1390 mA/cm2, FF= 88.41%, =26.37%).

Parallel Second Order Runge – Kutta new method of the Geometric Mean

mahmood Dhiya alani

College Of Basic Education Research Journal, 2020, Volume 16, Issue 3, Pages 944-953
DOI: 10.33899/berj.2020.165717

Runge - Kutta methods are one of the best methods for numerically solving (ODEs), and the search for better methods is always up to date [1]. Our concern here is with present a new method for solving Initial Value Problems (IVPs) using a mixing between techniques and formulas and obtain a new formula suitable for parallel computers, (see [2]). As we know a first step toward developing a parallel algorithm for the numerical solution of Initial Value Problems (IVPs), how we might widen the front of computation .The predictor – corrector (PC) methods of numerical integration provide a means for doing this, (see [3,4]) ."Evans Introduce a new Runge - Kutta method using the Geometric mean (GM) formula [5]" (see [6]). Here we collected these ideas and using the Implicit Runge - Kutta methods (IRK) which can be derived directly from Explicit Runge - Kutta methods (ERK) , these implicit methods “ that were derived “ , it is "the (backward) form of the explicit (forward) form [7]", to present our new parallel method which we called (PPCGM2) formula.