Infinite Body Centered Cubic Network of Identical Resistors

We express the equivalent resistance between the origin and any other lattice site in an infinite Body Centered Cubic (BCC) network consisting of identical resistors each of resistance R rationally in terms of known values and . The equivalent resistance is then calculated. Finally, for large separation between the origin and the lattice site two asymptotic formulas for the resistance are presented and some numerical results with analysis are given.Comment: 13 pages, 2 figure

The Quality Level of Eleventh Grade Mathematics Book Used in Gaza Secondary Schools

The Study aims at revealing the level of quality of math book for the eleventh grade (literary stream) in Gaza Governorates from the viewpoint of teachers, by identifying the quality standards that should be met in mathematics book for the eleventh grade, the availability of such standards from the viewpoint of mathematics teachers, and if the estimates for these standards vary with different variable (gender -academic qualification- years of experience). The study used the descriptive approach. A questionnaire was prepared including six fields (framework and formation of the book - objectives - content - author's writing style – evaluation and improving). After ensuring the validity and reliability of questionnaire, it was administered to a sample of (89) teachers who teach mathematics subject for eleventh grade. The data was analyzed using (Statistical Package for the Social Sciences) SPSS program, the study reached a set of results include: Preparing a list of standards consists of six fields, The whole fields of study did not reach the required level of quality, and there are no statistically significant differences at (µ?0.05) in the estimates of mathematics teachers of the eleventh grade for the quality of math books attributed to the variables(Gender - academic qualification - years of experience). The researcher suggested some recommendations. Key words: Mathematics textbook, Level of quality, Standards of quality

The Impact of Using Flipped Classrooms in Developing Mathematical Power among Female Students of the Department of Basic Stage Teaching at al-Aqsa University

This study aimed at examining the impact of using flipped classrooms in developing mathematical power among female students of the department of basic education stage at al-Aqsa university in Gaza. The researcher used the experimental method. He prepared the tool of the study (mathematical power test) and applied it to the selected sample of the study. The sample of the study consisted of 62 female students of the department of basic education stage  at al-Aqsa university. The selected students were registered for the course of mathematics and its teaching methods 2. The sample of the study was divided into two groups: the experimental group that consisted of 32 female students was taught the course by flipped classrooms, and the  control group that consisted of 30 female students was taught by an conventional method. The results of the study showed that flipped classrooms have positive effects on the development of mathematical power of female students of the department of basic stage teaching at al-Aqsa university.