Faculty of Education - Theses
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ItemAn investigation of Australian OECD Pisa trend results( 2009)This thesis investigates a range of equating-related issues for the Australian data collected under the Organisation for Economic Co-operation and Development (OECD) Programme for International Student Assessment (PISA). The implications for Australia's reported trend results are considered in detail. Following the exploration of differential item functioning (DIE) and dimensionality of the Australian PISA scales, a single scale, over all three PISA cycles (namely 2000, 2003 and 2006) for each major PISA domain (namely Reading, Mathematics and Science) was constructed. Previous published PISA results have employed a common reporting scale across all cycles for Reading, however scales common to all cycles have not been utilised for Mathematics or Science. Two further classes of equating issues are considered in this paper. First four different approaches to equating were used - two different treatments of missing data as well as two different item sets (all items and link items only) were estimated for each scale - and for each approach the implications for trends were discussed. Second, the equating approaches studied here used item parameters which are set at the country level rather than at the international level, thus allowing an examination of the impact of country DIF on the Australian trend results. Australian PISA trends were first explored in terms of means and standard deviations, and then in terms of the overall shape of the estimated performance distribution. This was achieved through the use of Q-Q (Quantile-Quantile) plots. Where applicable, comparisons were made with published trends. While results showed many similarities between models and published results, some differences were found. Australian PISA Reading means were statistically significantly lower when treating all omitted (or missing) responses as not administered at the item calibration stage compared to treating embedded omitted responses as incorrect and trailing omitted responses as not administered in PISA cycles 2003 and 2006. Between 2003 and 2006, published Australian Mathematics means were significantly lower than those found in this study. The published results showed a decline in means between 2003 and 2006, whereas the results reported here showed no change in the Australian means between these two cycles. Published Australian Reading distributions reported a decline from 2000 to 2003 and 2003 to 2006 in the number of Australian students located at the top end of the performance distribution. Between cycles 2000 and 2003 there was a decline from around the 70th percentile onwards and between cycles 2003 and 2006, the decline was even more severe; the higher the ability group the higher the decline from around the 20th percentile onwards. These estimated changes in the distribution shape were not replicated here, where the Australian data is analysed independently of the international data. The reanalysis undertaken here found a decline between the first two PISA cycles, but remarkably in the bottom 15 per cent of the distribution only. Between cycles 2003 and 2006 an almost constant decline across the whole proficiency distribution was found and not a decline that was limited to the top end of the distribution. The reported results highlight some of the potentially important differences that can occur when different analysis methods are used.
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ItemA cross-age comparative investigation of students' attitudes towards computers as a tool to support learning in years 7-12 science classes( 2000)This thesis documents a cross-age comparative investigation of students' attitudes towards computers as a tool to support learning in Years 7 - 12 science classes. The study was set at the secondary school campus of an independent girls' school in Victoria. The secondary school is broken into three relatively autonomous groups, the Junior Secondary School (JSS), the Middle School (MS) and the Senior School (SS). Data was collected by a survey administered to 1215 students in Years 7 -12 science classes. Results of the survey were analysed using Analysis of Variance (ANOVA) and post hoc Bonferonni analyses. This study aimed to investigate the ways computers are used in science classes. Word processing and the internet were the most common computer uses across the school. A comparison of students in JSS, MS and SS's preferred frequency of use of computers in science classes was undertaken. JSS students preferred to use their computers more frequently in science classes when compared to MS and SS students. An investigation of the uses of computers in science classes that students found beneficial to their learning of science concepts was undertaken and compared across the three school groups. Students' attitudes towards computers as tools to support learning in the science classroom was investigated. The majority of students in all school groups felt the computer was a beneficial support for learning when completing assignment work and was a beneficial tool for presentation. However, it depended on the number of years of computer experience in science classes as to whether students felt the computer was of benefit to their learning of theory or practical work. Aspects of computer use at school in general, that students liked or disliked was determined. The stage of the curriculum that students were currently in, was the major determinant for the students' attitudes towards the use of computers as a support for learning.
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ItemPhenomenal robotics! : so what are students' perceptions about the robotics experience?( 2006)Robotics as a learning experience is becoming very popular in Australian schools and is being offered to students at primary and secondary level. It is considered to be a valuable integrated unit particularly in the areas of science and mathematics but also provides an ideal environment for students to engage and learn via constructionist principles. But what do young students perceive to gain from participating in a robotics experience? This investigation looks at the lived experience of doing robotics through the eyes of a group of students who were of mixed ages but had participated in the robotics' experience when they were in grade six as 12 year olds. The students were interviewed regarding the effect of the robotics experience on their learning during and after the experience ended. Students reflected on the phenomenon and made strong connections with the social value of the program. Their emphasis was not so much on academic skills gained but on the sense of self and its relationship to the group. The robotics experience provided an environment that allowed the students to feel valued and motivated to strive for goals, without realising they were gaining valuable information and skills as well as enjoying themselves.
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ItemFrom I can't and I don't to I can and I want to : a study in teaching and learning( 1998)In recent years, the teaching and learning of science in primary schools has been a major concern within professional sectors and at all levels of education. This study reveals teachers' responses and personal growth within a long term professional development program. Through an analysis of workshop session transcripts the researcher identifies a range of meanings made by the participant primary teachers about the teaching and learning of science in their classrooms. The findings indicate that positive changes in the teachers' views of themselves as learners of science takes place when teachers and tertiary teacher educators work together in long term collaborative inquiry. A further outcome is that the teachers develop new confidence and abilities which inform their classroom practice.