READING MATHEMATICS REPRESENTATIONS: AN EYE-TRACKING STUDY

We use eye tracking as a method to examine how different mathematical representations of the same mathematical object are attended to by students. The results of this study show that there is a meaningful difference in the eye movements between formulas and graphs. This difference can be understood in terms of the cultural and social shaping of human perception, as well as in terms of differences between the symbolic and graphical registers.     

The application of production functions to the higher education system — some examples from Portuguese universities

Production functions were established for the Arts and Law Faculties of Coimbra and Lisbon Universities and for the Higher Institute of Engineering of Lisbon, in which the number of enrolled students was related to the number of professors and assistants. It was possible to find in Coimbra and Lisbon Universities the existence of possibilities of substitution among those factors and economies of scale. In the case of the Higher Institute of Engineering there seems to exist a relation of complementarity between the number of professors and assistants. Also with regard to this Institute, a production function for graduates was estimated which relates them to the expenditures on academic staff and materials. It was found that in this case it was necessary to introduce time as a representative of technological progress, although it was found to be negative. These results are discussed, and the interest and the limitations of the use of production functions for educational management purposes are outlined.     

Using Wikipedia to enhance student learning: A case study in economics

Currently, there is widespread interest in how Web 2.0 tools can be used to improve students’ learning experiences. Previous studies have focused either on the advantages of wikis or on concerns over the use of Wikipedia. In this study, we propose to use Wikipedia as a classroom wiki. In doing so, we discuss how students can improve their standard written assignments using Wikipedia instead of a module wiki. Compared to traditional essay assignments, students’ submission of articles to Wikipedia can address many of the problems faced by instructors of traditional assignments, such as students’ poor writing skills, lack of primary source research, and poorly balanced discussions. Our study was based on our experience in teaching an upper-level economics module at the National University of Singapore over two semesters: 121 students who were enrolled in semester 1 submitted a traditional writing assignment, while 124 students enrolled in semester 2 contributed two short entries to Wikipedia. The results showed a large increase in the number of students checking their assignment feedback. Further, students’ writing quality improved noticeably in the Wikipedia assignment, and they were able to put forth more balanced discussions of relevant issues and include a greater number of primary sources. Despite the challenges faced when using Wiki markup language, the students enjoyed the overall experience.     

From Screening to Improving Quality: The case of Latin America

Use of testing expanded in Latin America during the last 50 years from academic centres to policy makers and mass media. The expansion has been the result of the perseverance of many researchers and practitioners, cheaper and more user-friendly technol ogy, demands on labour and its ability to compete in a global market, and international comparisons showing the low adult functional literacy and poor performance of Latin American students. The first boost to testing was generated by the need for screening students for higher education. Later on there was a demand for identifying quality gaps causing repetition problems and low performance. In the 1980s a few countries used testing to assess alternative solutions and new ways to deliver teaching and managing classroom processes. By the mid-1990s a dozen countries were operating national testing systems. Recent tasks have been the identification of reading problems; the conducting of international compari sons; and the selection of effective models to raise quality. Even though only a few countries have taken full advantage of the whole set of possible uses of testing, there is a growing interest in using testing for raising students' achievement.     

The digital library of Iberoamerica and the Caribbean: humanizing technological resources

In the last two decades, the University of Colima has worked out a very interesting project for information technologies development through its Coordination for Information Technologies (CIT) program. This has provided years of experience in the application of technologies for the academic community. After its designation as a UNESCO Regional Center, our university developed a very ambitious education and research plan that was submitted to one of UNESCO's educational programs. This project was approved as the “UNESCO Chair on New Information Technologies,” and it started working successfully with the “Diploma Course on Digital Libraries” 2 years ago.

The Diploma Course is part of the action taken toward the creation of a Great Iberoamerican and the Caribbean Digital Library. Today 144 trainers from 36 national libraries in Latin America and the Caribbean state members are receiving training courses based on the UNESCO methodology, which is comprised of the registration of digital objects, adherence to standards for audio and video digitization, and development of an international open-source software for information management.     

Achievement in mathematics and language is linked to regular physical activity: a population study in Chilean youth

Abstract

We examined the association between the allocation of time to regular physical activity (PA) and achievement in mathematics and language in Chilean adolescents after controlling for confounders. In a random sample of 620 ninth graders (15.6 ± 0.7 years old), we measured regular PA, including physical education and sports extracurricular activities, and academic performance, using national standardised tests. Bivariate and multivariate regression analyses modelled the relation between academic and health-related behaviours. Sufficiency and proficiency in mathematics and language were used as outcome variables. Only 18% of adolescents had >4 h·week^–1 of regular PA. Devoting >4 h?·?week^–1 to regular PA significantly increased the odds of sufficiency and proficiency in both domains. After full adjustment, the odds of sufficiency and proficiency in mathematics increased by 1.9 (95% CI: 1.1–3.5) and 2.7 (95% CI: 1.7–4.3), respectively. Similarly, the odds of sufficiency and proficiency in language increased by 3.3 (95% CI: 1.7–9.7) and 2.6 (95% CI: 1.6–4.1), respectively. Adolescents with the highest allocation of time to regular PA performed much better in mathematics and language than inactive students. The academic benefits associated with PA can help to promote sustained behaviour changes regarding lifestyles. They can be more easily perceived as gains than health benefits alone.     

The role of executive functions in the relation between socioeconomic level and the development of reading and maths skills / El rol de las funciones ejecutivas en la relación entre el nivel socioeconómico y el desarrollo de habilidades lectoras y matemáticas

Executive functions (EF) are a set of processes that allow individuals to plan, monitor and organize tasks and thus play a key role in the development of reading and maths skills. Environmental factors such as socioeconomic level (SEL) influence reading and maths skills as well as EFs. The aim of this study is to explore the extent to which executive functions play a mediating role between SEL and reading and maths performance. To this end, we assessed 286 Chilean primary education students: 86 with a high SEL and 200 with a low level. The results show that the high-SEL group obtained consistently higher scores than their peers with low SEL levels in both reading and maths tasks as well as in EF measurements. This suggests that SEL could influence the development of these variables. The results also showed that EFs partially mediate the relation between SEL and reading and maths skills in primary school students through the specific function of inhibition. The results are discussed in light of the effect of SEL on the development of EFs and school learning.