Semiotic mediation for algebra teaching and learning.
In the theoretical framework of Vygotskij's Theory this report discusses the mediating function of particular tools available in a microworld. Following the analysis carried out by one of the authors, in the case of Cabri a new microworld has been set up and a teaching experiment carried out. Some results are reported and the theoretical notion of semiotic mediation discussed.
La natura della mediazione offerta dai sistemi basati su micromondi all’apprendimento della matema
Questo lavoro analizza il ruolo che ambienti basati sull’uso del calcolatore, ed in particolare i micromondi, possono assumere nelle attività di insegnamento e apprendimento di conoscenze matematiche. Il lavoro parte dallo studio di alcuni risultati significativi che si sono avuti in questo campo a livello internazionale. Tale studio viene utilizzato come quadro di riferimento per situare e analizzare una ricerca specifica che abbiamo svolto in questo settore. Tale ricerca riguarda la proge
Is That Legal? A Case of Acid Rain
The goal of this activity is to understand how techniques of persuasion (including background, supporting evidence, storytelling and the call to action) are used to develop an argument for or against a topic. Students develop an environmental case study for presentation and understand how a case study is used as an analysis tool.
15.667 Negotiation and Conflict Management (MIT)
Negotiation and Conflict Management presents negotiation theory – strategies and styles – within an employment context. 15.667 meets only eleven times, with a different topic each week, which is why students should commit to attending all classes. In addition to the theory and exercises presented in class, students practice negotiating with role-playing simulations that cover a range of topics. Students also learn how to negotiate in difficult situations, which include abrasiveness,
Health inequalities and the welfare state: perspectives from social epidemiology
It might be assumed that welfare states that have done so much to reduce inequality of opportunity have also reduced inequality of health outcomes. While great advances have been seen in reducing the rates of many diseases in welfare states, disparities in health have not been eliminated. Is it the case that lowering risks overall will leave disparities that cannot be remediated, and that such efforts are at the point of diminishing returns? The evidence suggests that this is not true. Instead t
Mars Student Imaging Project (MSIP)
This website features NASA and Arizona State University's Mars Education Program, which offers students the opportunity to be involved in authentic Mars research. Students and teachers are able to perform an in-depth analysis of a site on Mars using the THEMIS visible wavelength camera onboard the Mars Odyssey spacecraft. The website features everything that is necessary for teams of students in grades 5 through college sophomore level to participate in this project, including activity formats,
The "1OO-Year Flood"
This site describes how and when 100-year floods occur. It states that flood designations are based on statistical averages, not on the number of years between big floods. It also suggests that it would make more sense to refer to 100-year floods as 1-in-100 chance floods. This resource is a United States Geological Survey (USGS) Fact Sheet. It can be used in teaching quantitative skills.
New Algorithms in Information Science "New Algorithms in Information Science," a lecture delivered by UCLA Professor Stanley Osher at UC Irvine on February 17, 2010. The past few years have seen an incredible explosion of new (or revival of old) fast and effective algorithms for various imaging and information science applications. These include: nonlocal means, compressive sensing, graph cuts, Bregman iteration, as well as relatively old favorites such as the level set method and PDE based image restoration. I'll give m
"New Algorithms in Information Science," a lecture delivered by UCLA Professor Stanley Osher at UC Irvine on February 17, 2010.
The past few years have seen an incredible explosion of new (or revival of old) fast and effective algorithms for various imaging and information science applications. These include: nonlocal means, compressive sensing, graph cuts, Bregman iteration, as well as relatively old favorites such as the level set method and PDE based image restoration. I'll give m
Confronting Some Statistical Inference Misconceptions
This lesson poses a series of questions designed to challenge students' possible misconceptions of statistical inference and hypothesis testing. The lesson uses the statistical software, Fathom, and three datasets with information on the number of chips per canister distributed by a snack maker. The data can found at the relation address below.
Engaging the Community in Multidisciplinary TEL Research: A Case-Study from Networking in Europe
The STELLAR Network of Excellence was launched in February 2009 with the explicit intention of Sustaining Large Scale Multi-Disciplinary Research in Technology Enhanced Learning. So as to support this aim, the network has defined a number of different activity tracks, aimed at building capacity amongst senior-level researchers/decision makers, mid-level researchers and junior researchers/PhD students as well with a separate track dedicated to building community level capacity. In the abstract, t
Moving learning games forward
The notion of using video games for learning causes some to cringe, others to leap for joy, and many to ask questions about this learning medium. These questions often come from people and organizations that are considering delving into the world of learning games but dont know if this is advisable or dont know where to start. The goal of this paper is to answer those questions about learning games and to help plot a path for people and organizations interested in developing or fostering the
Deposition of Gold Onto a Glass Substrate by Evaporation Through a Polycarbonate
The deposition of 10 micrometer gold islands on a glass surface by evaporation through a polycarbonate membrane is described.
Hopkins Verbal Learning Test - Revised: Standardization Data of Percentage Retention and Comparison
The purpose of this study was to determine the utility of the Hopkins Verbal Learning Test-Revised (HVLT-R), as a brief neuropsychological screening measure of immediate and delayed verbal memory in a mild traumatic brain injury sample. From an archival database, neuropsychological test scores of 698 subjects with a recent mild-TBI were selected for the study. Age and education effects were analyzed with nonparametric measures. Correlations between the neuropsychological tasks were conducted.
Mother and Teacher Interaction in Preschools during Parent-Teacher Conferences
The education of children has been a long-standing issue for stakeholders over numerous years. Various literatures recommend that formal learning should begin during the preschool years of a child’s life, and must include home-school partnerships. Empirical data has shown that parents and teachers who work together can positively impact a child’s success in school. This study sought to gain insight into the phenomenon of parent-teacher interactions in preschools, via the lens of symbolic int
The Impact of Retention on Student Educational Outcomes: A Five Year Study of a Group of Retained an
Accountability has become a major focus in educational reform and an increasing number of states and school districts are adopting policies to end social promotion. These policies generally include mandatory retention for students who fail to meet cut-off scores on high-stakes tests. Despite compelling evidence to the contrary, educators believe that underachieving students need, or deserve, to be retained and will benefit from repeating a grade. Using archival data from a large urban school dis
Virtue Under Fire: Leadership Attributes Required in 21st Century Combat
The purpose of this study is to examine sources of leader attributes and values of U. S. Army officers and to ascertain which attributes and values commissioned officers find most applicable to modern combat. The study compares the theoretical attributes taught in Army officer education programs with the attributes and values practiced by four commissioned officers in Iraq, Somalia, Rwanda, and Afghanistan. In narrative case study form, it presents a phenomenological exploration of the philosoph