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- Christiansen, Iben, et al.
(författare)
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Crosscurrents of Swedish Mathematics Teacher Education
- 2021
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Ingår i: International Perspectives on Mathematics Teacher Education. - Charlotte, North Carolina : Information Age Publishin (IAP).
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Mathematics teacher education includes the mathematics content teachers need to understand, the ways that pedagogical approaches are developed, the messages about the nature of mathematics teaching and learning, and the interface between tertiary preparation and school contexts. Scholars from Sweden, France, Malawi, Singapore, New Zealand, Brazil, the USA, and Canada provide insights for the mathematics education community’s understanding of how teacher educators in different countries structure, develop, and implement their respective mathematics teacher education programs. Several themes emerged across the chapters, including: varied approaches to developing culturally responsive pedagogies and/or Indigenous perspectives to ensure equity for all students; issues and challenges in fostering partnerships and collaborations among various stakeholders, with partnerships involving connections with mathematics classroom teachers, school districts, and/or mathematicians or mathematics departments; strategies for developing mathematics knowledge for teaching, providing insights into messages about what it means to learn mathematics in terms of content and pedagogy; and preparing teachers who have flexibility and resourcefulness. This book will be of interest to those responsible for higher education, including teacher educators, researchers in mathematics teacher education, instructors of graduate courses preparing future teacher educators, as well as policy makers.
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| 2. |
- Christiansen, Iben Maj, 1964-, et al.
(författare)
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The crosscurrents of Swedish mathematics teacher education
- 2021
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Ingår i: International perspectives on mathematics teacher education. - Waxhaw, NC, USA : Information Age Publishing. - 9781648026317 - 9781648026294 - 9781648026300 ; , s. 9-48
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Bokkapitel (refereegranskat)abstract
- As with any programs in teacher education, Swedish mathematics teacher education is influenced by changing political winds, developments in Information and Communication Technology (ICT), culture, history, PISA results, research-based program designs, and a fair amount of passion. Content and outcomes are nationally determined and include the requirement of a strong research foundation, but this is often not how practcing techers work, which exerts its own pull on teacher education. The specific implementations of programs take different forms at the universities that offer mathematics teacher education. In order to provide a comprehensive yet meaningful ntroduction to both the current system and current practices, we describe the overall organization of Swedish mathematics teacher education, and then offer short cases of implemented programs. To ensure inclusivity, the various parts are written by mathematics educators from the respective institutions. In this way, both variation across mathematicas teacher education for diffrent grade levels and variation across different institutions working with the same national directives can be distinguished. Issues such as the academization of teacher education are problematized, as are other forces that constitute the crosscurrents in Swedish mathematics teacher education.
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| 4. |
- Albers, Eva, 1966, et al.
(författare)
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Cellular response in fresh water microalgae to polluting compounds of flue gas when used as carbon source
- 2012
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Ingår i: 15th Workshop of International Study Group for Systems Biology (ISGSB), September 25-28, Ameland, The Netherlands.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Attention has lately been given to the use of microalgae as provider of valuable biomass or as production organism. To be able to use algae in industrial production, especially of biofuels, the cultivation procedures need to be improved in terms of efficiency and minimization of production costs. To reach these goals understanding of both process conditions as well as biological response to such conditions is needed for optimization of algal cultivation. Carbon dioxide, the carbon source during phototrophic growth, should be provided at high levels to result in the high biomass concentrations needed for a feasible production. Suitable high-level sources of CO2 are flue gases from industrial activities, which when used for algal cultivation will be a way of carbon capture reducing CO2 emissions. However, flue gases contain additional components that may affect cellular activity negatively. The aim of this research is to understand the physiological behavior of microalgae in industrial conditions to be able to optimize cellular performance. This initial project was launched to provide basic information about response of several types of microalgae that could grow in fresh water conditions to the main gaseous pollutants in flue gas, NO and SO2. This knowledge would guide the selection for a deeper characterization of effect-response relations and control of metabolism in algae in response to industrial conditions. Ten strains of fresh water species and one marine were selected based on reported fast growth and interesting composition such as high levels of lipids. The algae were screened for growth and cellular composition in cultivations with fresh water mineral medium. Artificially produced flue gas, mimicking effluents of pulp mills, consisting of 15% CO2 with 100 ppm NO and 10 ppm SO2 included for the last period of the cultivations was bubbled into the cultures. All strains tested were able to grow and two Scenedesmus strains, an isolated strain from a nearby lake, Chorella protothecoides and Chlamydomonas reinhardtii exhibited the highest specific growth rates. The highest levels of cellular macromolecules were found in Chlorella emersonii (45% carbohydrates), Nannochloropsis salina and the local isolate (65% proteins), and Botrycoccus braunii (57% lipids). It can be concluded that all strains tested were able to grow in cultures with flue gas as carbon source, also the marine species Nannochloropsis salina, and that the gaseous components decrease pH which needs to be monitored carefully to avoid that large drops in pH inhibit algal growth.
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| 5. |
- Albers, Eva, 1966, et al.
(författare)
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Influence of flue gas mimicking effluents of paper mills on growth and cellular composition of fresh water species of microalgae
- 2012
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Ingår i: 9th European Workshop on Biotechnology of Microalgae, 4-5 June, Nuthetal, Germany.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- To be able to use algae in industrial production, especially of biofuels, the cultivation procedures need to be improved in terms of efficiency and minimization of production costs. One important factor is to reach as high biomass concentrations as possible e.g. by using high levels of carbon dioxide provided by flue gas. The aim of this project was to study the influence of flue gas simulated to mimic effluents of pulp mills on growth and cellular composition of microalgae. Ten strains of fresh water species and one marine were selected based on reported fast growth and interesting composition such as high levels of lipids. The algae were screened in cultivations with fresh water mineral medium and artificially produced flue gas bubbled into the cultures consisting of 15% CO2 with 100 ppm NO and 10 ppm SO2 included for the last period of the cultivations. All strains tested were able to grow and two Scenedesmus strains, an isolated strain from a nearby lake, Chorella protothecoides and Chlamydomonas reinhardtii exhibited the highest specific growth rates. The highest levels of cellular macromolecules were found in Chlorella emersonii (45% of carbohydrates), Nannochloropsis salina and the local isolate (65% of proteins), and Botrycoccus braunii (57% of lipids). It can be concluded that all strains tested were able to grow in cultures with flue gas as carbon source, also the marine species Nannochloropsis salina, and that the gaseous components decrease pH which needs to be monitored carefully to avoid that large drops in pH inhibit algal growth.
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| 9. |
- Anderssson, Kristina, 1962-, et al.
(författare)
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Lärarutbildares naturvetenskap under lupp - : en studie i gränslandet mellan ämnesdiscipliner och skolämnen
- 2019
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Ingår i: Resultatdialog 2019. - Stockholm : Swedish Research Council, Vetenskapsrådet. - 9789188943224 ; , s. 10-13
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Universitetslärare i biologi, fysik och kemi lägger ingen större vikt vid att det finns lärarstudenter bland eleverna och deras uppfattning om ämnesdidaktik är diffus. Ofta sätter instrumenttunga laboratorier osynliga ramar för vad som är legitimt att fokusera. Studenter med annat fokus riskerar att stötas ut. Kulturen på institutionerna gör att ämneslärarstudenter matas med budskap om att undervisning är något underordnat – vilket sannolikt påverkar deras syn på utbildningsval, självbild och framtida yrkesroll som specialister på just undervisning. Vi har studerat lärarutbildares syn på sina ämnen och hur denna manifesteras i utbildningen.
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| 10. |
- Backe, Susanne, et al.
(författare)
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Inventering av myrfåglar i Norrbotten : Pilotstudie inom Biogeografisk uppföljning
- 2014
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Denna rapport utgör en pilotstudie inom arbetet Biogeografisk uppföljning, delsystem fåglar.I studien har ingått att i Norrbottens inland inventera 25 slumpade punktrutter förlagda tillöppna och särskilt blöta myrmarker större än 200 ha representerande naturtypernaMyrsjöar (3160), Öppna mossar och kärr (7140), och Aapamyrar (7310). Syftet var attundersöka om dataunderlagen inom Svensk fågeltaxering kan väsentligt förbättras för ettantal mindre vanliga fågelarter förslagna som typiska arter för dessa naturtyper. Särskildfokus var att undersöka förekomster av dvärgbeckasin, myrsnäppa, salskrake, stjärtand,sädgås och svartsnäppa. Resultat från studien visar att observationer av endast svartsnäppaoch i viss mån sädgås var så pass många att de nämnvärt bidrog till att förbättradatakvaliteten för dessa båda arter. Inte desto mindre var antalet observerade individer avdvärgbeckasin, myrsnäppa och salskrake relativt många ställt till de fåtaliga årligaobservationer som gjorts av dessa arter vid standardrutter senaste åren. Överraskandemånga videsparvar observerades vilket bidrar till förstärkta underlag i Svensk fågeltaxering.Som underlag för Biogeografiskt uppföljning tillför nu aktuella dataunderlag sannolikt endastbegränsade data men en närmare analys krävs av behoven.
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