The effectiveness of the GeoGebra Programme in the development of academic achievement and survival of the learning impact of the mathematics among secondary stage students

Education and Information Technologies - The objective of this research is to identify the effectiveness of the GeoGebra program in developing academic achievement and ensuring survival of the...     

Document management systems from current capabilities towards intelligent information retrieval: an overview

Documents circulating in paper form are increasingly being substituted by its electronic equivalent in the modern office today so that any stored document can be retrieved whenever needed later on. The office worker is already burdened with information overload, so effective and efficient retrieval facilities become an important factor affecting worker productivity. This paper first reviews the features of current document management systems with varying facilities to manage, store and retrieve either reference to documents or whole documents. Information retrieval databases, groupware products and workflow management systems are presented as developments to handle different needs, together with the underlying concepts of knowledge management. The two problems of worker finiteness and worker ignorance remain outstanding, as they are only partially addressed by the above-mentioned systems. The solution lies in a shift away from pull technology where the user has to actively initiate the request for information towards push technology, where available information is automatically delivered without user intervention. Intelligent information retrieval agents are presented as a solution together with a marketing scenario of how they can be introduced.     

Using web blogs as a tool to encourage pre-class reading, post-class reflections and collaboration in higher education

This paper reports on the students＇ experiments of using blogs to encourage themselves to do pre-class reading assignment and reflections after class. The sample in the study included five ESL （English as a Second Language） graduate students in a course of teaching methods, and 90 software engineering students in an undergraduate information technology program. Results indicated that there was a positive attitude towards the use of blogs for pre-class preparation and post-class reflections. However, considering the successful experience, it is important to consider the class size, students＇ educational level, and the type of reading assignment.     

Validity of proximity sensor-based wear-time detection using the ActiGraph GT9X

Our study investigated the performance of proximity sensor-based wear-time detection using the GT9X under laboratory and free-living settings. Fifty-two volunteers (23.2 ± 3.8 y; 23.2 ± 3.7 kg/m²) participated in either a laboratory or free-living protocol. Lab participants wore and removed a wrist-worn GT9X on 3–5 occasions during a 3-hour directly observed activity protocol. The 2-day free-living protocol used an independent temperature sensor and self-report as the reference to determine if wrist and hip-worn GT9X accurately determined wear (i.e., sensitivity) and non-wear (i.e., specificity). Free-living estimates of wear/non-wear were also compared to Troiano 2007 and Choi 2012 wear/non-wear algorithms. In lab, sensitivity and specificity of the wrist-worn GT9X in detecting total minutes of wear-on and off was 93% and 49%, respectively. The GT9X detected wear-off more often than wear-on, but with a greater margin of error (4.8 ± 11.6 vs. 1.4 ± 1.4 min). In the free-living protocol, wrist and hip-worn GT9X’s yielded sensitivity and specificity of 72 and 90% and 84 and 92%, respectively. GT9X estimations had inferior sensitivity but superior specificity to Troiano 2007 and Choi 2012 algorithms. Due to inaccuracies, it may not be advisable to singularly use the proximity-sensor-based wear-time detection method to detect wear-time.     

The Rockefeller Foundation and German physics under national socialism

Conclusion Why did the Rockefeller Foundation think that it had to redeem its pledge of 1930 after the drastic political changes had occurred in Germany? It is my impression that the foundation was forced reluctantly to do so. There had, of course, been a resolution passed by the trustees in 1930 to vote the funds. This did constitute an obligation for the foundation which its trustees and officers were reluctant to disavow. It would probably have preferred that Planck could not meet the conditions set forth by the foundation. If this had occurred, it could have avoided the onus of failure to meet an obligation undertaken in 1930 and could then have also avoided providing support, even if only indirectly, for National Socialist Germany. When faced with the alternatives of withdrawal or payment of the grant, most of the officers preferred to delay action. Max Mason, on the other hand, had promised Planck that the grant would be made, despite the delay.Increasingly, after 1933, the Rockefeller Foundation spent more time dealing with requests for refugee scientists than with the support of scientific work in Germany. The dismissal of foundation-supported assistants on racial grounds had angered some members of the foundation.When the Rockefeller Foundation was chartered in New York in 1913 it declared that its objective was the well-being of mankind throughout the world. That remained its aim, but a fanatical nationalism made it impossible for the foundation to pursue an internationalist policy in a country with a regime entirely antithetical to that ideal.     

Informal STEM: learning with robotics and game design in an urban context

Abstract

This mixed methods study examined how engagement in robotics and game design influenced students’ self-efficacy, STEM attitudes, and computational thinking (CT) skills. Predominantly African-American students engaged in engineering and computer science tasks during informal learning environments. Results revealed students’ self-efficacy scores on computer gaming increased significantly. Focus group data supported these findings, revealing that computer programing was challenging, but students enjoyed the tasks, added elements of culture in some cases, and valued the agency the tasks provided. Focal students were also able to make connections to STEM-related careers. Observational data demonstrated that focal students exhibited substantive CT during robotics and moderate CT during game design. Results support the idea that robotics and game design may be used to broaden underrepresented students’ participation in STEM.     

Understanding similarities and differences between parents' and teachers' construal of children's behaviour

This study compares and contrasts teachers' and parents' construal of children's behaviour, drawn from the general population rather than clinical extremes. Questionnaire data were obtained from parents and teachers on the same 3–7 year old children via nurseries and mainstream schools. Item reduction followed standard psychometric approaches. Varimax‐rotated principal components analysis was undertaken on dichotomised teacher and parent responses, giving a four‐factor solution as most appropriate both for teachers and parents (aggression; anxiety; context‐directed behaviour; social maturity/communicativeness). The low correlation found between parents and teachers on corresponding factors suggests strong divergence of perspectives and/or situation‐dependence of behaviours. Reliability was high enough to not provide the explanation – i.e., serial correlations over three months within each respondent type were relatively strong. However, slight changes also took place over time: teacher ratings of anxiety differentiated out into anxiety proper and social maturity, while ratings of aggression and non‐context‐directed (‘inappropriate’) behaviour integrated towards a single factor which may reflect “threat to classroom order”. Implications for parent–teacher communication are discussed.     

Exploring mathematics identity: an intervention of early childhood preservice teachers

ABSTRACT

Early childhood and elementary preservice teachers often fear mathematics, find it irrelevant, have mathematics anxiety, hold negative self-perceptions, and have low mathematics achievement. This study investigates the influence of an identity exploration intervention on preservice teachers’ mathematics identities during a college Algebra course specifically designed for education majors. Results provide insight into the patterns of change in identity and motivation. Data was analyzed following a theoretical framework on role identity that highlights the interaction between self-perceptions, beliefs, goals, and action possibilities. Analysis identified patterns of change in student identities. Themes across cases highlight the differences in change amongst participants, the influence of initial identity, and the impact of perceived relevance on identity exploration.