A Framework to Support Teacher Noticing of Students\u27 Mathematical Thinking in Technology-mediated Environments

The practice of teacher noticing students\u27 mathematical thinking often includes three interrelated components: attending to students\u27 strategies, interpreting students\u27 understandings, and deciding how to respond on the basis of students\u27 understanding. This practice gains complexity in technology mediated environments (i.e., using technology-enhanced math tasks) because it requires attending to and interpreting students\u27 engagement with technology. Current frameworks implicitly assume the practice includes noticing the ways students use tools (including technology tools) in their work, but do not explicitly highlight the role of the tool. While research has shown that using these frameworks supports preservice secondary mathematics teachers (PSTs) developing noticing practices, it has also shown that PSTs largely overlook students\u27 technology engagement when they are working on technology enhanced tasks (Journal for Research in Mathematics Education, 2010; 41(2):169–202). In this article, we describe our adaptation of Jacobs et al.\u27s framework for teacher noticing student mathematical thinking to include a focus on making students\u27 technology-tool engagement explicit when noticing in technology-mediated environments, the Noticing in Technology-Mediated Environments (NITE) framework. We describe the theoretical foundations of the framework, provide a video case example, and then illustrate how the framework can be used by mathematics teacher educators to support PSTs\u27 noticing when students are working in technology-mediated environment

Minding the Gap: Grassroots Efforts to Enhance the Graduate Student Research Experience

As scholars in training and future faculty, graduate students are a vital community within any higher education institution and a population that should be embraced by academic libraries. While some libraries have highly structured and formalized programming, others have an ad hoc approach relying on subject librarians to address individual student questions at the point of need. This book chapter discusses the collaborative effort of three librarians at Illinois State University’s Milner Library in developing specialized workshops and a strong partnership with the Graduate School. The authors cover the evolution of the collaborations and partnerships, necessary steps needed to sustain partnerships, processes for identifying, building, and expanding program content, and long-term plans to establish formalized programming and assessment

ON-FARM RESEARCH IN A DECENTRALIZED INFORMATION MODEL OR GRASSROOTS STATISTICS

Practical Farmers of Iowa (PFI) is an organization that seeks to provide interactive methods of relaying information through farmer-to-farmer sharing (farm field days, workshop discussions, networking) and the generation of new information. On-farm research (OFR) is an important information-generating activity of this group. PFI has shown that key to doing research on farms lies in combining practical protocols with the statistician\u27s old familiar friends - replication and randomization. We provide background on PFI and how PFI cooperators carne to using strip plots and paired comparisons to answer fundamental questions about what to do on their individual farms. We discuss the challenges faced by OFR cooperators, how those challenges are met and how the simple paired comparison t-test works for the OFR cooperator to answer that very typical experimental question posed by producers: Is alternative practice \u27b\u27 better than, worse than, or no different from my current practice \u27a\u27

Phytoremediation of Lindane in Transgenic Arabidopsis thaliana Expressing a Bacterial HCH-dehydrochlorinase (LinA) Protein

Gamma-hexachlorocyclohexane (ɣ-HCH), commonly referred to as lindane, is one of the most widely studied and ubiquitously detected organochlorinated contaminants within the environment. Mainly used as a pesticide, it is highly resistant to chemical, biological and natural photolytic light degradation which enables it to remain intact for long periods of time. Concerns over its toxicity, persistence and long-range transport have necessitated an environmentally appropriate and cost-efficient remediation strategy to remove it from the ecosystem, especially in developing countries where consumption and production of Lindane can have a serious effect on health, economics and arable land use. Phytoremediation, using plants and their respective enzymes, is an eco-friendly, practical and cost efficient biotechnology for the treatment and removal of lindane. This thesis aims to develop a detailed understanding of transgenic Arabidopsis thaliana expressing an HCH-dehydrochlorinase (LinA) protein, from Sphingobium japonicum UT26, and its ability to take up, dechlorinate and mineralize the persistent organic pollutant. This investigation of transgenic phytoremediation utilizes Gateway® cloning technology, Agrobacterium-mediated transformation, enzymatic activity assays, along with metabolomic and proteomic techniques to show that transgenic A. thaliana can express the bacterial protein and is capable of removing lindane from its environment to either sequester it or metabolize it in vitro. However, this work also establishes that in vivo, the transgenic plant displays similar growth characteristics to the wild type and is unable to survive on any of the lindane concentrations previously estabilished as being toxic to A. thaliana.. Therefore, additional investigations into the metabolome and interactome of transgenic A. thaliana, and other plants exhibiting an innate ability to uptake lindane, as well as the controlled expression of engineered proteins, need to be studied before confirming the effectiveness of phytoremediation as a suitable technology for the removal of lindane from the environment

Expression écrite et orale en anglais des sciences sociales

Jennifer Κ. Dick, maître de langue Le but de ce séminaire était de préparer les participants à faire une excellente conférence en anglais sur leur sujet de recherche : à s’exprimer sans effort et sans appauvrissement de la pensée dans le registre de l’argumentation abstraite, à comprendre les questions soulevées par un public de culture anglophone, et à savoir répondre avec facilité à ces questions en utilisant un bon registre de la langue et un vocabulaire varié lié à leur sujet de spécialis..

Preservice mathematics teachers’ professional noticing of students’ mathematical thinking with technology

The purpose of this study is to examine the ways in which preservice secondary mathematics teachers (PSMT) professionally notice middle school students’ mathematical thinking on a technology enhanced mathematical task. The middle school students’ work was captured as a videocase for PSMTs to examine. Findings show that every PSMT included a discussion of the middle school students’ interaction with the technology in their noticing prompts, demonstrating that PSMTs recognized that the middle school students’ mathematical understanding was tied to their interactions with the technology. Additionally, results from PSMTs’ justifications for their predictions of middle school students’ responses to the task, incorporated the middle school students language and described how the middle school students would interact with the technology

Applications of three-dimensional printing in ophthalmology

Three-dimensional (3D) printing is increasingly used to produce customised objects and is a promising alternative to traditional manufacturing methods in diverse fields, such as dentistry and orthopaedics. Already in use in other medical specialities, adoption in ophthalmology has been limited to date. This review aims to provide an overview of 3D printing technology with respect to current and potential applications in ophthalmic practice. Medline, Embase and internet search were performed with "3D printing", "ophthalmology", "dentistry", "orthopaedics" and their synonyms used as main search terms. In addition, search terms related to clinical applications such as "surgery" and "implant" were employed. 3D printing has multiple applications in ophthalmology, including in diagnosis, surgery, prosthetics, medications and medical education. Within the past decade, researchers have produced 3D printed models of objects such as implants, prostheses, anatomical models and surgical simulators. Further development is necessary to generate optimal biomaterials for various applications, and the quality and long-term performance of 3D models needs to be validated