Using eighth-grade mathematics scores from TIMSS 2003, a large-scale international achievement assessment database, this study investigated correlates of math achievement in two developed countries, Canada and the United States and two developing countries, Egypt and South Africa. Variation in math achievement within and between schools for individual countries was accounted for by a series of two-level HLM models. Specifically, there were five sets of HLM models representing student background, home resources, instructional practices, teacher background, and school background related factors. In addition, a final model was built by including all the statistically significant predictors in earlier models to predict math achievement. Findings from this study suggested that whereas the instructional practices model worked the best for the United States and the teacher background model served as the most efficient and parsimonious model for predicting math achievement in Egypt, the final model served as the best model for predicting math achievement in Canada and South Africa. These findings provide empirical evidence that different models are needed to account for factors related to achievement in different countries. This study, therefore, highlights the importance that policy makers and educators from developing countries should not base their educational decisions and educational reform projects solely on research findings of developed countries. Rather, they need to use their country-specific findings to support their educational decisions. This study also provides a methodological framework for applied researchers to evaluate the effects of background and contextual factors on students' math achievement

The sharing of needles among injection drug users (IDUs) is a common route of Human Immunodeficiency Virus and Hepatitis C Virus transmission. Through the increased utilization of social network analysis, researchers have been able to examine how the interpersonal relationships of IDUs affect injection risk behaviour. This study involves a secondary analysis of data from a cross-sectional study of 156 IDUs from Winnipeg, Manitoba titled “Social Network Analysis of Injection Drug Users”. Multiple logistic regression analysis was used to assess the individual and the social network characteristics associated with needle sharing among the IDUs. Generalized Estimating Equations analysis was used to determine the injecting dyad characteristics which influence needle sharing behaviour between the IDUs and their injection drug using network members. The results revealed five key thematic findings that were significantly associated with needle sharing: (1) types of drug use, (2) socio-demographic status, (3) injecting in semi-public locations, (4) intimacy, and (5) social influence. The findings from this study suggest that comprehensive prevention approaches that target individuals and their network relationships may be necessary for sustainable reductions in needle sharing among IDUs. / February 2006

With advancements in information technology, people can now access enormous amounts of information with ease. The education system, which plays a vital role in developing our future, has undergone important changes. In the past decades, nearly every part of the education process, from curricula design, assessment methodologies, to teaching methodologies, have been scrutinized. As a result, a series of reforms or changes have been implemented. The purposes of the present study are to investigate more about perceptions and attitudes of secondary school mathematics teachers towards the use of computers in their teaching. Besides, the factors affecting teachers’ attitudes towards computer application in teaching are also analyzed. Finally, the study will also explore the effectiveness of students’ learning through cooperative learning One class of 36 students from 5C, aged 14-16, were invited to participate in this research by using the DMS of GeoGebra for teaching the topics of ‘Basic Properties of Circles’. The teaching outcome of 5C would then be compared with 2 other classes of 5A and 5B, which would be taught by my peer teachers. 5A and 5B’s teachers would employ conventional teaching methods to teach ‘Basic Properties of Circles’ (i.e. the Control Group). Five student worksheets for Basic Operation of GeoGebra and each sub-topic of “Basic Properties of Circles” were devised (see Appendices I to V). Those 5 students were all asked to fill in the questionnaire I. Besides, 12 mathematics teachers were asked to fill in the questionnaire I (see Appendix VIII) of Mathematics with Technology Perceptions Survey (MTPS) in order to investigate their perceptions of using information technology (IT) in teaching mathematics. The purpose of the MTPS items was to ascertain the prevalence of key attitudes and perceptions creating barriers or enabling teachers’ intentions to alter their practice and to teach mathematics with technology. Demographic data of MTPS items were collected on gender, age group, years of teaching, education level, teacher training, teaching level and subject taught. During the whole study, video-recording was taken. In addition, my two peer teachers from classes 5A and 5B were also invited to have an interview. Then, they were asked to fill in the questionnaire II (see Appendix XIII) in order to investigate their’ intention in using the DMS of GeoGebra for teaching and learning mathematics in Secondary 5 classes. Besides, 14 students were randomly selected in order to find out the effects of their learning by using DMS of GeoGebra through peer groups, and these 14 students were invited to complete an extended version of questionnaire II (see Appendix X). Finally, students were asked to conduct a test (see Appendix VI) in order to compare the learning outcome of students learning ‘Basic Properties of Circles’ with the DMS of GeoGebra with those learning in its absence. It is suggested that the integration of computer in learning mathematics should be required. Schools need to make full use of technology to guide students to learn as much as possible. Also, leadership needs to be available to teachers and to provide an in-service education in technology use, so that technology use was operating as well as possible. / published_or_final_version / Education / Master / Master of Education

The purpose of this longitudinal study was to examine the relationship between technology integration indicators and school level achievement. Four years of school level secondary data from publicly available databases maintained by the Florida Department of Education were combined for all public elementary, middle, and high schools in the state. This study examined approximately 2300 schools that participated each year in the Florida Innovates Survey about technology integration between 2003-04 and 2006-07. Complexity theory supported the use of multi-level modeling to examine the relationships between technology integration and outcomes. Three achievement outcomes (reading, mathematics, and writing) and two mediating behavioral outcomes (attendance and misconduct) were investigated. Moderating variables controlled in the model included school level, demographics, and learning environment. After data preparation, all composite variables were developed using factor analysis. Models were progressively built with significant variables at each level retained in subsequent levels of the study. A total of 94 models were estimated with maximum likelihood estimation using SAS 9.1.3 statistical software. The integration of technology is only one of the many factors that impact student learning within the classroom environment. Results supported previous research about the relationship between the moderating variables and school level achievement and confirmed the need to include moderating variables in the model. After controlling for all the other moderating variables, technology integration had a significant relationship with mean school achievement. Although the percent of teachers who regularly use technology for administrative purposes was consistently significant in the models for four out of five outcomes studied, the interactions with time, time2, and time3, resulted in curvilinear trends with inconsistent results. These inconsistent significant findings make drawing conclusions about the integration of technology within Florida's public schools difficult. Furthermore, the small changes observed in mean school achievement over the span of this study support the concept that time is a critical factor for school level learning and change. Therefore, continued analyses of the longitudinal trends for Florida schools in the relationship between technology integration variables and school achievement, while controlling for moderating variables, are recommended.

published_or_final_version / Education / Master / Master of Education

published_or_final_version / abstract / toc / Education / Master / Master of Science in Information Technology in Education

Youth require opportunities to master and demonstrate new skills, make independent choices, and form positive social relationships to encourage positive youth development. Camps provide a unique setting that fosters the development of new sources of social capital and social support. Current literature examining positive youth development in camps has been able to identify some demographic differences in camper experiences at camp, but has not yielded statistically significant relationships and no consensus as to the explanations for those relationships. Using a longitudinal dataset gathered in a camp setting, this study examined the relationships between gender and age and personal development. Social capital and social support were found to have significant roles as mediating variables in the development of personal development at camp. This study enhances the understanding of the benefits to children from attending camp, and why females and older children may benefit the most from these experiences.

The sharing of needles among injection drug users (IDUs) is a common route of Human Immunodeficiency Virus and Hepatitis C Virus transmission. Through the increased utilization of social network analysis, researchers have been able to examine how the interpersonal relationships of IDUs affect injection risk behaviour. This study involves a secondary analysis of data from a cross-sectional study of 156 IDUs from Winnipeg, Manitoba titled “Social Network Analysis of Injection Drug Users”. Multiple logistic regression analysis was used to assess the individual and the social network characteristics associated with needle sharing among the IDUs. Generalized Estimating Equations analysis was used to determine the injecting dyad characteristics which influence needle sharing behaviour between the IDUs and their injection drug using network members. The results revealed five key thematic findings that were significantly associated with needle sharing: (1) types of drug use, (2) socio-demographic status, (3) injecting in semi-public locations, (4) intimacy, and (5) social influence. The findings from this study suggest that comprehensive prevention approaches that target individuals and their network relationships may be necessary for sustainable reductions in needle sharing among IDUs.

The sharing of needles among injection drug users (IDUs) is a common route of Human Immunodeficiency Virus and Hepatitis C Virus transmission. Through the increased utilization of social network analysis, researchers have been able to examine how the interpersonal relationships of IDUs affect injection risk behaviour. This study involves a secondary analysis of data from a cross-sectional study of 156 IDUs from Winnipeg, Manitoba titled “Social Network Analysis of Injection Drug Users”. Multiple logistic regression analysis was used to assess the individual and the social network characteristics associated with needle sharing among the IDUs. Generalized Estimating Equations analysis was used to determine the injecting dyad characteristics which influence needle sharing behaviour between the IDUs and their injection drug using network members. The results revealed five key thematic findings that were significantly associated with needle sharing: (1) types of drug use, (2) socio-demographic status, (3) injecting in semi-public locations, (4) intimacy, and (5) social influence. The findings from this study suggest that comprehensive prevention approaches that target individuals and their network relationships may be necessary for sustainable reductions in needle sharing among IDUs.

Like many South African high school mathematics teachers I have followed the development of computers with interest and I have tried wherever possible to gain some experience on them. Thus when microcomputers became more readily available the mathematics department at our school, Graeme College in Grahamstown, motivated for the school to acquire this powerful new tool. The eventual outcome was that the Old Boys' Association donated to the school 3 BBC B microcomputers with monitors, a disc drive, a printer and two tape recorders. These have now been in the school for three years. The acquisition prompted this research project which takes the following form:- 1) An investigation into some of the uses of microcomputers in schools and, in particular, in the mathematics classroom. 2) A statement on the present position adopted by the Cape Education Department on the use of computers in schools. 3) A study of what the experience has been in other countries, particularly in Britain and the United States of America. 4) A description of an investigation which was undertaken at our school using the method of Action Research and Triangulation. Its aim was to investigate the feasibility of using a microcomputer to aid in the teaching of mathematics and the reaction of the pupils to this innovation. Three different approaches were implemented. a) The algorithmic approach: In this investigation a class of standard eight pupils were required, with the help of the teacher, to write, enter and test a short computer program which would solve any pair of simultaneous linear equations of the form, ax + by = c. Their reaction to this form of instruction was noted by myself and a non-participant observer. The pupils themselves were also asked to express their reactions, both verbally and by filling in a prepared questionnaire. Examples of worksheets, exam questions and analysed questionnaires are given in the appendix. Short programs which examine various other mathematical concepts are also listed and discussed. b) The audio-visual approach: In this case use was made of a graphs software package in which the computer would draw either a straight line, circle, parabola or hyperbola when the appropriate variables were entered. This package also includes a graph game facility where participants are required to find the equation of the graph which will pass through three given points. Points are awarded if the correct type of graph is chosen and the variables are entered within a certain time interval. The pupils involved in this investigation were standard eight higher grade mathematics pupils and their reaction to this form of instruction was again noted using the methods described in (a) above. c) Computer Aided Instruction: Here I was most fortunate to be able to make use of the Rhodes University PLATO Centre. This allowed me to take a class of eighteen standard eight higher grade mathematics pupils to the Centre. Here during four sessions, each of just over an hour, the pupils interacted with the software on the computer terminal. The software used was a set of five lessons written by Barbara Lederman of the Community College Maths Group, of the University of Illinois in 1976. The lessons give instruction and require the pupils to transform, plot and draw the graphs of linear equations of the form, ax + by + c = 0, x = c and y = b. They are also taught and required to find the equations of given straight lines. Their reactions to this form of instruction are discussed after each session. 5) In conclusion some thoughts are given on how computers can best be utilised in the school situation, with particular reference to the teaching of mathematics.