La enseñanza de contenidos específicos en matemáticas

¿Matemáticas para todos o matemáticas de élite? ¿Lenguaje matemático o matemática aplicada? En la base de las últimas reformas educativas de todo el mundo no dejan de estar presentes dilemas, reales unas veces, ficticios otras, que tienen mucho que ver con los supuestos políticos—ideológicos—que sustenten los diseñadores de esa reforma respecto al papel de la educación y a los que no se sustrae la enseñanza de las matemáticas…     

Changing literacies,changing formations: the role of elicitation in teacher action research with new technologies

As new technologies promise to be an enduring feature of the landscape of teachers’ work, we consider how teachers implicitly bring stories forward into their classroom explorations with new media as a part of their ‘informal learning’. By ‘stories’ is meant specific classroom texts as well as preferred teacher practices with those texts. The article represents a reflection on the methodological role that ‘elicitation’ can play in drawing out teacher thinking during a time of professional change, thinking that would otherwise likely remain embedded, particularly when teachers’ attention is focused forward on innovation in practice. The methodological use of ‘elicitation’ emerged in the first year of an ongoing teacher action research study, in which seven teachers have been involved in a professional development initiative that actively engages teachers in examining changing literacy formations, beginning with the teachers’ own literacy formations. The methodological practice of elicitation borrows from phenomenology, ethnomethodology, narrative research, reader response theories, curriculum theory and psychoanalysis, and emerged as a way to acknowledge the life histories that teachers were bringing to their professional development with new media. We suggest that elicitation can potentially draw out deep and sustaining sources of a teacher’s commitment, as well as resistance, to change. It can help disclose the tensions between commitment and resistance that even teachers who voluntarily undertake to incorporate new technologies into their practice may experience. Within a teacher action research framework, elicitation can also serve to remind teachers (and others) of the value of what they know and are learning, thus contributing to teachers developing a ‘scholarship of practice’ in response to any actual or perceived ‘intensification’ of their work.     

A Longitudinal View of the Liberal Arts Curriculum a Decade After Merger: A Multiple Case Study of Community Colleges in Connecticut,Kentucky, and Louisiana

This study is an examination of the state of the liberal arts curriculum in community colleges in three geographic regions of the United States. From a constructivist paradigm and using globalization theory as a theoretical framework, this multiple case study examined faculty work life and administrative processes related to curriculum change in merged community and technical colleges. Through an examination of research on globalization, mergers, and trends in the general education and liberal arts curriculum, a gap in the literature emerged in the studies of community college curriculums after merger. This study considers whether the focus on workforce development and decrease in the transfer mission has diminished the liberal arts courses in the college curriculum. Research on liberal arts courses identified them as courses that emphasize higher order thinking and the development of intellectual skills needed to engage in a democratic society. If students are not exposed to these skills, it may have a detrimental effect on a democratic society. Study findings suggested that the English and communication curriculums are narrowing and the mission is more toward workforce skill preparation. Also, the changing demographics of today[#x02019]s community college students, as well as the ongoing budget constraints, create challenges and frustrations for faculty members.     

Introduction To The Futures Focus Issue: The New Rules Of Business

The Community College Futures Assembly has served as a national independent policy think tank since 1995. Its purpose is to articulate the critical issues facing American community colleges and recognize leading-edge trendsetting programs. Convening annually in January in Orlando, Florida, the Assembly offers a learning environment where tough questions are raised, critical issues are discussed, and policy implications are challenged. The 2006 Community College Futures Assembly focused on “The New Rules of Business.”

This special focus issue of the Community College Journal of Research and Practice highlights the “best practices” of 30 Bellwether trend-setting institutions. These institutions competitively presented their “lessons learned” to representatives of colleges interested in replicating their award winning programs. In each of the three award categories, Instructional Program and Services; Planning, Governance and Finance; and Workforce Development; 10 Bellwether finalists were competitively selected. Finalists were featured as presenters at the assembly to share their leading-edge ideas with participants. Three institutions then won the prestigious Bellwether Award in their respective category.     

The School Improvement Specialist Field Guide

Where is your journey on the path to improvement taking you? Sometimes we need a new perspective to see the path more clearly. This book will help the reader focus on life's experiences that develop skills and promote improvement that will lead to future successes. Many resources are within reach in The School Improvement Specialist Field Guide, and the stories and experiences of others are rich in example and can help to parallel your own journey and professional improvement. The School Improvement Specialist Field Guide (2013; ISBN 978‐1‐4522‐4089‐3) is published by Corwin Press. $39.99. For a 15% discount, use code D13194 when you order a copy at http://www.corwin.com/books/Book238079?siteId=corwin‐press&subject=C00&qsupld=false&q=page&fs=1 .     

Search tactics used in solving everyday how-to technical tasks: Repertoire,selection and tenacity

With greater access to computational resources, people use search to address many everyday challenges in their lives, including solving technology problems. Although there are now many useful ‘how-to’ resources online (especially videos on YouTube), it can still be difficult to identify, understand, and resolve certain kinds of technical problem. While research tasks have been studied for many years and we know the tactics people use, we know far less about searchers’ tactics for how-to technical tasks that involve actually being able to apply found information to resolve a problem. Crucial to our study was developing and studying a highly realistic, how-to technical task, for which there was no single guidance resource: making a phone safe for a child. After providing 39 participants with an actual phone to fix, and a search engine to perform the task, we analysed their search tactics using retrospective cued think aloud interviews. Our primary contribution is a set of 77 tactics used, in three categories, along with detail of how common they were. We conclude that people had a lot of tactics in their repertoire. Although it was not hard for participants to find relevant information, what was hard was for participants to find information they could use; indeed only 23% of participants successfully completed the entire task. Domain knowledge affected the choice of tactics used (although not necessarily towards better task success). We discuss these influences and make design recommendations for how future search systems can support those in resolving how-to technical tasks.     

The effects of mid-flight whole-body and trunk rotation on landing mechanics: implications for anterior cruciate ligament injuries

ABSTRACT

The purpose was to quantify the effects of mid-flight whole-body and trunk rotation on knee mechanics in a double-leg landing. Eighteen male and 20 female participants completed a jump-landing-jump task in five conditions: no rotation, testing leg ipsilateral or contralateral (WBRC) to the whole-body rotation direction, and testing leg ipsilateral (TRI) or contralateral to the trunk rotation direction. The WBRC and TRI conditions demonstrated decreased knee flexion and increased knee abduction angles at initial contact (2.6 > Cohen’s dz > 0.3) and increased peak vertical ground reaction forces and knee adduction moments during the 100 ms after landing (1.7 > Cohen’s dz > 0.3). The TRI condition also showed the greatest knee internal rotation angles at initial contact and peak knee abduction and internal rotation angles and peak knee extension moments during the 100 ms after landing (2.0 > Cohen’s dz > 0.5). Whole-body rotation increased contralateral knee loading because of its primary role in decelerating medial-lateral velocities. Trunk rotation resulted in the greatest knee loading for the ipsilateral knee due to weight shifting and mechanical coupling between the trunk and lower extremities. These findings may help understand altered trunk motion in anterior cruciate ligament injuries.