Search results for "VDP::Mathematics and natural science: 400"
showing 10 items of 421 documents
Konkretiseringsmateriell i arbeid med brøk
2016
Fractions are a complex concept, and many students struggle in their first approach with it. In this study I have considered how 8th grade students used concrete materials in relation to their work with fractions, in light of the socio-cultural perspective of learning. This study was based on this research question: How do students in 8th grade perceive the concept of fraction through the use of concrete materials when solving tasks? To answer this research question, the use of concrete materials was considered with respect to how this contributed to the students' perception of the different aspects related to fractions: fraction as a part of a whole, fraction as measurement, fraction as di…
Terrestrial Inputs Drive Seasonality in Organic Matter and Nutrient Biogeochemistry in a High Arctic Fjord System (Isfjorden, Svalbard)
2020
Climate-change driven increases in temperature and precipitation are leading to increased discharge of freshwater and terrestrial material to Arctic coastal ecosystems. These inputs bring sediments, nutrients and organic matter (OM) across the land-ocean interface with a range of implications for coastal ecosystems and biogeochemical cycling. To investigate responses to terrestrial inputs, physicochemical conditions were characterized in a river- and glacier-influenced Arctic fjord system (Isfjorden, Svalbard) from May to August in 2018 and 2019. Our observations revealed a pervasive freshwater footprint in the inner fjord arms, the geochemical properties of which varied spatially and seaso…
Motivasjon i matematikk hos elever som benytter «Den Virtuelle Matematikkskolen» : en aksjonsforskning der målet er å heve motivasjonen i matematikk …
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 The title of this study is “Motivation in mathematics among students using Den Virtuelle Matematikkskolen, translated The virtual school of mathematics. The goal of this study was to increase motivation in mathematics among the children I was teaching, and I tried to do it by introducing and working with the web resource “Den Virtuelle Matematikkskolen-U”, shortned DVM-U. I also wanted to find out which impact work with this resource would have for the students motivation in mathematics, and which implications it would have for my work as their teacher. The issue for this study is: In which ways can introduction and work with DV…
Tidlig algebra : en studie av tidlig algebra med elever på 6. trinn
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 The main theme for the research described in this thesis is early algebra. Early algebra is a phase that could fit the gap between arithmetic and algebra. Early algebra includes algebraic reasoning, such as analyzing relationships between quantities, noticing structure, studying change, or generalizing, without a need to use symbols. In my Theoretical Frame, I define the terms early algebra, algebraic thinking, and generalization; I explain the differences between early algebra and pre-algebra, and I go into the relationships between arithmetic and algebra. To gain insight into early algebra, I have studied how pupils in 6th gra…
Tilpasset opplæring for elever med dyskalkuli : en matematikklærer sin beskrivelse
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 The main topic of the thesis is how to adapt teaching to students with dyscalculia. In this thesis, the term dyscalculia is accounted for as one of several concepts for students who struggle particularly with mathematics. There is currently a lack of consensus among scientists about which concepts to be used for students with mathematics difficulties and what is meant by the different terms. In the thesis, there is therefore a separate chapter which presents an overview of the literatures use of concepts for students who have learning difficulties in mathematics. The thesis research questions consist of a main question and two s…
Kindergarten teachers’ accounts of their developing mathematical practice
2012
Published version of an article in the journal: ZDM. Also available from the publisher at: http://dx.doi.org/10.1007/s11858-012-0422-1 This study explores kindergarten teachers’ accounts of their developing mathematical practice in the context of their participation in a developmental research project. Observations and interviews were analysed to elaborate the accounts as regards orchestrating mathematical activities in the kindergarten. A co-learning agreement was established as collaboration between the kindergarten teachers and researchers. The study reveals that the kindergarten teachers argue that they have been empowered in developing an inquiry stance towards mathematics and mathemat…
Revisiting the didactic triangle: from the particular to the general
2012
Published version of an article in the journal: ZDM. Also available from the publisher at: http://www.springerlink.com/content/61p78l089tnx8rn5/ The basic notion of a didactic triangle is explained with historical annotations on its origins and subsequent theorization in the literature. Instances of its application to classroom environments to demonstrate its representational capabilities are presented. Generalizations of the triangle are proposed that integrate the role of technology, the researcher in mathematics teaching developmental research, and mediating complexes in the student–teacher–content interfaces. Further, the use of the didactic triangle as a heuristic device is also discus…
Isolation and characterization of nuclear microsatellite loci in the northern shrimp, Pandalus borealis
2012
Published version of an article published in the journal: Conservation Genetics Resources. Also available from the publisher at: http://dx.doi.org/10.1007/s12686-011-9486-4 We developed and characterized 20 microsatellite primer loci for the northern shrimp Pandalus borealis. All 20 loci were polymorphic with number of alleles ranging from 3 to 36 and with observed heterozygosity between 0.04 and 0.93. In addition, we tested the utility of these markers in three related shrimp species, P. montagui, Atlantopandalus propinqvus and Dichelopandalus bonnieri. These new markers will prove useful in the identification of stock structure and hence, assessment of the commercially important species P…
An Exact Solution for the Level-Crossing Rate and the Average Duration of Fades of the Envelope of Sum-of-Cisoids Processes
2012
Authors version of an article published in the journal: Procedia Technology. Also available from the publisher at: http://dx.doi.org/10.1016/j.protcy.2012.03.004 Sum-of-cisoids (SOC) processes provide a physically and numerically appealing framework for the modelling and simulation of a wide class of mobile radio channels. This paper is concerned with the problem of finding a general solution for the level-crossing rate (LCR) and the average duration of fades (ADF) of the envelope of SOC processes. Exact expressions are derived for the LCR and the ADF by taking into account that the inphase component, the quadrature component, and the time derivatives of the inphase and quadrature component…
Professional mathematics teacher identity: analysis of reflective narratives from discourses and activities
2012
Published verson of an article in the journal: Journal of Mathematics Teacher Education. Also available from the publisher at: http://dx.doi.org/10.1007/s10857-012-9216-1 This article focuses on the methodological use of reflective narratives from discourses and activities of an experienced primary teacher as evidence of her professional identity. The teacher’s reflective narratives emerge from her participation in a 3-year developmental and research project, Learning Communities in Mathematics, conducted at the University of Agder (UiA) in Norway. As background for our study, we firstly present the teacher in action with her sixth-grade pupils in a mathematics lesson, and then analyse sele…