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A concern for the Swedish students’ knowledge of mathematics, especially in algebra, is formulated in the PISA –rapport (Skolverket, 2012). From this conclusion, an interest was formed to investigate how practicing teachers in Sweden use manipulatives to support students in developing a better understanding of algebra. An interview-based study is presented in this degree project. This study focus on four Swedish teacher’s perspectives on using manipulatives when working with the equality sign in algebra. The purpose of this study is through interviews highlight these teachers' perceptions of manipulatives and ways of working with the material. The result of this study presents a generally positive view on using manipulatives in teaching mathematics, especially working with the equality sign in algebra. The result also presents how the teachers address the importance of developing an understanding of the equality sign.  The teacher’s answers and perspectives on using manipulatives is also confirmed by research and literature. Finally this study marks the significant role of the teacher when students learn and develop an understanding for mathematics. This degree project is analyzed by following questions: -What experience and skills do teachers have with the use of manipulatives when it comes to working with the concepts of the equal sign in algebra?- In which way does the teachers believe that working with manipulatives facilitates an understanding of the equal sign?- What importance do teachers lay on manipulatives regardingthesignificance of the equal sign?

Disturbance events can alter habitat properties, leading to species displacement, isolation and/or local extinction. In addition, introduced species have been recognized as a threat to biodiversity of native species. Understanding the interacting impacts of fire on native and introduced wildlife species, and the influence on a native species of competition with an introduced species after ecosystem change is critical. Tree squirrels are indicators of forest health; we used two species to determine thresholds and assess behavioral responses to determine adaption to habitat alterations. We studied native Arizona gray squirrels (Sciurus arizonensis), which are believed to favor riparian habitat, and introduced Abert's squirrels (S. aberti), which prefer open parklike ponderosa pine (Pinus ponderosa) in the Santa Catalina Mountains, Arizona, USA. We examined how native but reportedly declining Arizona gray squirrels and introduced Abert's squirrels use areas within widespread fires that burned the study area in 2002-3. Fires burned in a mosaic pattern of unburned, low, moderate, and high burn severity patches. To determine how fire may affect squirrel habitat and behavior, we examined how fire altered habitat use and occupancy, and used distance sampling to determine squirrel abundance, distribution and use within a mosaic of burn severities. Occupancy and habitat use indicate that introduced Abert's squirrels are better adapted to post-fire conditions whereas native Arizona gray squirrels may be adversely impacted by fire disturbance. Our results suggest that Arizona gray squirrel populations may be locally imperiled due to post-fire habitat alteration and loss exacerbated by competition with Abert's squirrels. Abert's squirrels predominantly occupied unburned ponderosa pine and mixed conifer zones with open understories. In contrast, Arizona gray squirrels were documented at only four sites and primarily occupied unburned to low burn riparian areas with dense understories. Abert's squirrels predominately nest and feed in unburned coniferous areas whereas Arizona gray squirrels nest in unburned to low burn nonconiferous areas. Arizona gray squirrels have a reduced distribution and potentially in decline but only remain at lower elevations on the Santa Catalina Mountains. Fire management and restoration efforts should include examination of the differential impacts of fire on native and invasive species.

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The author argues that religion has provided the deaf community with a powerful language to convey their authority in struggles to preserve sign language. Employing religious rhetoric, the American deaf community historically overcame the oppression of a dominant hearing community that suppressed the use of sign language. Grounding his arguments for educating deaf Americans in his Protestant theology, the Reverend Thomas Gallaudet garnered support for the school by appealing to the Christian convictions of the citizens of Hartford - intertwining Protestantism with the emerging American deaf community. By exploring the school, sanctuary, and social activism of the American deaf community, the author provides evidence of deaf community rhetoric that includes religious themes and biblical references. For example, in the latter half of the nineteenth century, arguments for methods of how to teach deaf students divided on ideological grounds. Manualists who supported the use of sign language often grounded their arguments in Protestant theology, while oralists who were influenced by Charles Darwin’s The Origin of Species grounded arguments in evolutionary thinking. The influence of biblical teachings was evident in the schools for the deaf. The chapel services perpetuated the use of sign language even in times when sign language was under attack. From these chapel services came a social purpose for the church sanctuary in the lives of deaf Americans in late nineteenth- and early twentieth-century America. The sanctuary also provided the deaf community with a political platform advocating sign language use. The social activism of the deaf community has taken on many forms. In the early twentieth century, the National Association of the Deaf president, George Veditz, used film to capture his fiery Preservation of the Sign Language, which is filled with religious rhetoric advocating the deaf community’s use of sign language. More recently, Deaf West Theatre’ production of Big River is an example of how artful expression is used to support the values of the deaf community. This dissertation concludes with the suggestion that technology has replaced many of the functions of religion in the lives of deaf Americans and the author encourages further research in specific areas.

This essay covers the subject of children with language disorders. We are two educators writing an experience-based essay on our preschool experiences and the literature with the subject of speaking disorders and verbal development. The main focus of this essay is how educators can recognize and stimulate children with language disorder. The starting point in the essay is two experience-based events from preschool which tells of two different boys, aged three and four. Both boys have some kind of verbal disorder and one of them also has Down´s syndrome. With support from the literature, this essay discusses different types of speaking disorders and how these can affect literacy development of children starting school. We clarify the meaning of the terms primary and secondary speech disorders. Furthermore, we discuss the importance of TAKK (Tecken som Alternativ Kompletterande Kommunikation, Eng. Signing as Alternative Complementary Communication) as a supportive tool for the development of one’s own language, and highlight other language stimulating activities; singing, storytelling and oral exercises. Finally, this essay stresses the importance of information from the parents of children with a speech disorder being is shared with the school, as this information is essential for a continued development of the child’s learning of speaking and reading. / Detta är en essä som handlar om barn med språkstörning. Vi är två pedagoger som skriver en erfarenhetsbaserad essä utifrån vår erfarenhet från förskolan samt med hjälp av litteratur om språkstörning och språkutveckling. Essän tar upp hur pedagoger kan uppmärksamma och stimulera barn med språkstörning. Utgångspunkten i essän är två erfarenhetsbaserade händelser från förskolan som berättar om två olika pojkar i åldern tre och fyra år. Båda pojkarna har någon form av språkstörning varav den ena pojken har Downs syndrom. Med litteraturens hjälp tar vi upp olika typer av språkstörning och hur det bland annat kan påverka läs- och skrivutvecklingen vid skolstart. Vi klargör innebörden av begreppen primär och sekundär språkstörning. För att hjälpa barn med språkstörning tar vi upp hur viktigt TAKK (Tecken som Alternativ Kompletterande Kommunikation) är som stöd för att kunna utveckla det egna språket. Några andra språkstimulerande aktiviteter som lyfts fram i essän är musik, sagoläsning och mungymnastik. Slutligen tar essän upp pedagogens uppdrag att förmedla föräldrar till barn med språkstörning vikten av att information om barnets språkstörning lämnas över till skolan. Denna information är viktig för en fortsatt utveckling av barnets läs- och skrivinlärning.

A sign pattern matrix is a matrix whose entries are from the set {+,-,0}. For a real matrix B, sgn(B) is the sign pattern matrix obtained by replacing each positive(respectively, negative, zero) entry of B by + (respectively, -, 0). For a sign pattern matrix A, the sign pattern class of A, denoted Q(A), is defined as {B: sgn(B) = A}. An n by n sign pattern matrix A requires all distinct eigenvalues if every real matrix whose sign pattern is represented by A has n distinct eigenvalues. In this thesis, a number of sufficient and/or necessary conditions for a sign pattern to reuiqre all distinct eigenvalues are reviewed. In addition, for n=2 and 3, the n by n sign patterns that require all distinct eigenvalues are surveyed. We determine most of the 4 by 4 irreducible sign patterns that require four distinct eigenvalues.

The Discourse of Embodiment in the Nineteenth-Century British and North American Sign Language Debates examines the transatlantic cultural reception of deafness and signed languages to determine why a largely successful nineteenth-century movement known as Oralism advocated the eradication of signed languages. The dissertation answers this question through exploring a range of texts including fiction by Charles Dickens and Wilkie Collins, Oralist texts by Alexander Graham Bell and Thomas Arnold, and deaf resistance texts including poetry and proposals to establish Deaf settlements. I argue that Oralists – and a wider Victorian culture – believed that signed languages were inferior to spoken and written languages because they believed that signed languages were more embodied than these other modes of language. This charge of embodiedness produced negative constructions of signed languages as more concrete, iconic, and primitive than speech and writing. In chapter one, I examine poetry written by deaf people in order to uncover the phonocentrism that underscored both Oralism and the dominant nineteenth-century construction of the importance of aural and oral sound to poetry. In chapter two, I consider the relationship between the sign language debates and the debates around evolution in order to argue that both sides of the evolutionary debate were invested in making deaf people speak. In chapter three, I consider Wilkie Collins’s depiction of a deaf heroine in his novel Hide and Seek. I argue that Collins’s desire to make his heroine speak through her body rather than sign points to the difficulties of representing a signing deaf person within the conventions of the Victorian novel. Finally, chapter four focuses on the rhetoric around deaf intermarriage and community as it arose in the eugenicist turn taken by Oralism. Using a variety of theoretical approaches including Deaf and Disability Studies, post-structuralist understandings of language, and animal studies, I examine how cultural constructions of deafness and signed languages reveal nineteenth-century anxieties about the nature of language, the meaning of bodily difference, and the definition of the human in the post-Darwinian era. / Thesis (Ph.D, English) -- Queen's University, 2008-09-23 17:20:59.793

Early language experience is thought to be essential to develop a high level of linguistic proficiency in adulthood. Impoverished language input during childhood has been found to lead to functional changes in the brain. In this study, we explored if delayed exposure to a first language modulates the neuroanatomical development of the brain. To do so, voxel-based morphometry (VBM) was carried out in a group of congenitally deaf individuals varying in the age of first exposure to American Sign Language (ASL). To explore a secondary question about the effect of auditory deprivation on structural brain development, a second VBM analysis compared deaf individuals to matched hearing controls. The results show that delayed exposure to sign language is associated with a decrease in grey-matter concentration in the visual cortex close to an area found to show functional reorganization related to delayed exposure to language, while auditory deprivation is associated with a decrease in white matter in the right primary auditory cortex. These findings suggest that a lack of early language experience alters the anatomical organization of the brain.

<p>The SASL project at the University of the Western Cape aims at developing a fully automated translation system between English and South African Sign Language (SASL). Three important aspects of this system require SASL documentation and knowledge. These are: recognition of SASL from a video sequence, linguistic translation between SASL and English and the rendering of SASL. Unfortunately, SASL documentation is a scarce resource and no official or complete documentation exists. This research focuses on creating an online collaborative video annotation knowledge management system for SASL where various members of the community can upload SASL videos to and annotate them in any of the sign language notation systems, SignWriting, HamNoSys and/or Stokoe. As such, knowledge about SASL structure is pooled into a central and freely accessible knowledge base that can be used as required. The usability and performance of the system were evaluated. The usability of the system was graded by users on a rating scale from one to five for a specific set of tasks. The system was found to have an overall usability of 3.1, slightly better than average. The performance evaluation included load and stress tests which measured the system response time for a number of users for a specific set of tasks. It was found that the system is stable and can scale up to cater for an increasing user base by improving the underlying hardware.</p>