Elementary School Teachers\u27 Perceptions of the Process of Integrating Technology

Administrators in a rural K-5 school district provided leadership, technical assistance, and technology resources to increase teachers\u27 use of technology to improve student achievement. Despite these efforts, teachers incorporated technology on a limited basis and some teachers reported they were unprepared to integrate technology. The purpose of this qualitative bounded case study was to examine teaching practices and teachers\u27 perceptions of technology integration in their daily lessons. The conceptual framework for this study included technology integration and constructivism, a theory based on observation and scientific study about how people learn. A purposeful sample of 10 K-5 teachers who integrated technology in instruction volunteered to participate in interviews and classroom observations, and provided lesson plans for document review. Qualitative data were analyzed using open coding to identify patterns and themes. Based on the findings, teachers used instructional videos and PowerPoint-guided lessons in daily instruction, and they used technology to monitor student progress weekly or biweekly. Teachers expressed a need for ongoing professional development in technology integration to enhance instruction, and they requested more time to collaborate with colleagues to develop technology-integrated lessons. It is recommended that K-5 teachers receive easily accessible onsite professional development to learn strategies and methods to integrate technology in the classroom. These endeavors may contribute to positive social change by restructuring the current district technology-based professional development models to support teachers\u27 integration of technology to improve student instruction

Report of Investigations No. 125 Atoka Group (Lower to Middle Pennsylvanian), Northern Fort Worth Basin, Texas: Terrigenous Depositional Systems, Diagenesis, and Reservoir Distribution and Quality

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Endangered Species: A Population Simulation

This article describes an activity which incorporates biology and mathematics at the secondary level. A hands-on simulation of a decreasing animal population is provided. Students collect their data, record it in a table, and analyze it using technological tools. The mathematics used in this activity includes rates; fitting functions to data; creating and interpreting linear, quadratic, and exponential functions; and using functions to solve real-world problems

Trabajando contenidos de ecología a partir de modelos en un contexto significativo : La invasión de ardillas en Buenos Aires

Se presenta un trabajo práctico inédito desarrollado en la materia Ecología General, una de las materias del ciclo troncal de la Licenciatura en Ciencias Biológicas que se dicta en la Facultad de Ciencias Exactas y Naturales de la UBA. Distintas experiencias innovadoras de los últimos años en los trabajos prácticos de la carrera tuvieron como objetivo un mayor protagonismo de los alumnos, tal como se plantea desde distintos marcos teóricos. La planificación tuvo como objetivos aplicar los modelos de crecimiento poblacional clásicos y la integración de los mismos con las invasiones biológicas. La actividad se basó en un artículo científico que propone un modelo para predecir el comportamiento de la invasión de la ardilla de vientre rojo a partir de la liberación de ejemplares en Jáuregui, Buenos Aires. El proceso de transposición didáctica incluyó la simplificación del tratamiento matemático del modelo. Se propuso a los alumnos estimar a partir de ciertos parámetros conocidos y un mapa simplificado del área, cual sería el tamaño poblacional y el área de distribución de la especie invasora luego de 30 años. Repensar los modelos de crecimiento poblacional generando un contexto significativo fue valorado por los alumnos y permitió además acercarlos al uso de modelo

The disease game: An interactive simulation program designed to teach ocular disease management skills

The Disease Game is a computer simulation designed to aid students in practicing test selection, disease diagnosis and disease management skills. Features of the simulation include a game format, digitized images and videos, and the ability to add additional patients

Molecular Identification of Brucella Abortus Bv5 and Strain 19 in Water Buffaloes (Bubalus Bubalis) in Northeast Argentina

Buffalo (Bubalus bubalis) populations are spread across northern Argentina, and they share their habitat with bovines. Both species are susceptible to brucellosis, and they are under a National Plan of Control and Eradication. To characterize the Brucella spp. that infects buffaloes, the blood of 35 animals that tested positive to brucellosis by a complement fixation test was collected. DNA was obtained and analyzed by polymerase chain reaction using different molecular markers. The genera, species, and biovars of Brucella were established by analyzing specific regions of the genes omp31, eri, alkB, and omp2ab. Brucella spp. was identified in 15 of 35 tested buffaloes. The product of the omp31 gene identified the genera. The detection of two fragments of 297 bp and/or 1000 bp from the eri gene confirmed the presence of B. abortus S19 and wild-type B. abortus. The amplification of the alkB gene allowed the identification of B. abortus biovars characterized by fragments of 498 bp (bv1, bv2, or bv4). The simultaneous amplification of 498 bp (alkB) and 1000 bp (eri) products suggested the presence of B. abortus bv1, which is highly prevalent in the cattle of Argentina. Fragments of 827 bp and 857 bp were amplified from the omp2ab gene, and their sequences showed 100% identity with B. melitensis and B. abortus bv5 (GenBank). However, the 721 bp product (alkB) specific for B. melitensis could not be amplified. This is the first report indicating the presence of B. abortus bv5 in Latin America.Fil: Martinez, Diana. Universidad Nacional del Nordeste; ArgentinaFil: Thompson, Carolina. Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Santa Fe. Estacion Experimental Agropecuaria Rafaela; ArgentinaFil: Russo, Ana Maria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro de Investigaciones y Transferencia de Formosa; ArgentinaFil: Jacobo, Roberto. Universidad Nacional del Nordeste; ArgentinaFil: Torioni de Echaide, Susana. Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Santa Fe. Estacion Experimental Agropecuaria Rafaela; Argentin