Search results for "VDP::Matematikk og naturvitenskap: 400"
showing 10 items of 647 documents
Design and Investigation of a Touch Gesture for Dividing in a Virtual Manipulative Model for Equation-solving
2020
AbstractPhysical models for equation solving typically lack feedback regarding their appropriate use. Such feedback is possible in virtual environments and could be implemented in hybrid models. Based on an epistemological analysis, this article presents a touch gesture as a way for users to signal they want to divide both sides of an equation and a design for feedback on the use of this so-called ‘division gesture’. The design is investigated by contrasting a case study, in which students used an app with the division gesture, with a preparatory study where students had to perform corresponding actions on physical manipulatives. This investigation revealed insight into feedback functions, …
Dynamics of undergraduate engineering students’ learning activities in mathematics in an online and in a blended environment
2020
Paper IV is not published yet. This thesis reports from a research study which investigates the role of technology rich environments in undergraduate engineering students’ processes of learning mathematics. The research is founded within a naturalistic research paradigm (Lincoln, 2007) and adopts a case study design (Yin, 2014). The two cases under consideration comprise a small group of undergraduate electronics engineering students, selected as participants, from an online and a blended learning environment (Borba et al., 2016). The first case study of online environment incorporates an online system, MyMathLab, for homework and assessment, and tutorial videos for the lectures in a calcul…
Opportunities and Challenges when Students Work with Vocationally Connected Mathematics Tasks
2021
Students in vocational education in Norway take a compulsory mathematics course in the first year of their programme. This course offers opportunities for engaging with mathematics which can be highly relevant to practice in many workplaces. Working with vocationally connected mathematics tasks, tasks designed to draw on students’ future working contexts, is one way of trying to connect to students’ possible future vocations. This study aims to understand how students interact with such tasks with a particular emphasis on the roles of norms, authenticity and students’ positioning between the practices of school, the workplace and everyday life. In this study, I observed students working wit…
Omvendt undervisning i matematikk : en studie av elevers oppfatning av undervisningsmetoden
2013
Masteroppgave i matematikkdidaktikk- Universitetet i Agder 2013 Many teachers want to try out different teaching methods to find the one that makes students learn best. In today's society we surround ourselves with technology most of the day and there are several teaching methods that make use of technological tools in different ways. The “flipped classroom” is one of these and this is a method that has become more and more popular around the world and now also in Norway. In short, this is a method where students get theoretical review outside the classroom by using instructional videos, while solving problems and other learning activities are carried out at school with the teacher present.…
Forskningsbasert lærerutdanning i matematikk : hva betyr forskningsbasert undervisning for GLU studentene i MA-149?
2013
Masteroppgave i matematikkdidaktikk- Universitetet i Agder 2013 It is enshrined in law and regulation that all higher education should be research-based and research-oriented. How a research-based approach should be reflected in the education is not defined clearly, so there is room for interpretation that gives the institutions a certain freedom. In this study I examine how a mathematics education courses at the University of Agder is research-corrected and the consequences of that for the students. To see the significance the students believe a research-based course has, I through the study attempt to answer the following research questions: - What does mathematics education research mean…
Climate mitigation and intensified forest management in Norway: To what extent are surface waters safeguarded?
2020
AbstractWhile the role of forestry in mitigating climate change is increasingly subject to political commitment, other areas, such as water protection, may be at risk. In this study, we ask whether surface waters are sufficiently safeguarded in relation to the 2015 launch of a series of measures to intensify forest management for mitigation of climate change in Norway. First, we assess how impacts on water are accounted for in existing regulations for sustainable forestry. Secondly, we provide an overview of the impacts of forestry on water quality relevant to three support schemes: afforestation on new areas, increased stocking density in existing forests, and forest fertilisation. Lastly,…
Depletion of coastal predatory fish sub-stocks coincided with the largest sea urchin grazing event observed in the NE Atlantic
2020
AbstractIn this contribution, we propose fishery driven predator release as the cause for the largest grazing event ever observed in the NE Atlantic. Based on the evolving appreciation of limits to population connectivity, published and previously unpublished data, we discuss whether overfishing caused a grazer bloom of the sea urchin (Strongylocentrotus droebachiensis) resulting in overgrazing of more than 2000 km2 kelp (Laminaria hyperborea) forest along Norwegian and Russian coasts during the 1970 s. We show that coastal fisheries likely depleted predatory coastal fish stocks through modernization of fishing methods and fleet. These fish were important predators on urchins and the reduct…
Protection from fishing improves body growth of an exploited species
2022
Hunting and fishing are often size-selective, which favours slow body growth. In addition, fast growth rate has been shown to be positively correlated with behavioural traits that increase encounter rates and catchability in passive fishing gears such as baited traps. This harvest-induced selection should be effectively eliminated in no-take marine-protected areas (MPAs) unless strong density dependence results in reduced growth rates. We compared body growth of European lobster ( Homarus gammarus ) between three MPAs and three fished areas. After 14 years of protection from intensive, size-selective lobster fisheries, the densities in MPAs have increased considerably, and we demonstrate t…
Stabilizing selection on Atlantic cod supergenes through a millennium of extensive exploitation
2022
Life on Earth has been characterized by recurring cycles of ecological stasis and disruption, relating biological eras to geological and climatic transitions through the history of our planet. Due to the increasing degree of ecological abruption caused by human influences many advocate that we now have entered the geological era of the Anthropocene, or “the age of man.” Considering the ongoing mass extinction and ecosystem reshuffling observed worldwide, a better understanding of the drivers of ecological stasis will be a requisite for identifying routes of intervention and mitigation. Ecosystem stability may rely on one or a few keystone species, and the loss of such species could potentia…
Task Contexts in Dutch Mathematics Education
2020
This chapter offers a description of task contexts in mathematics education in the Netherlands. International comparative studies show that the Dutch average percentage of mathematics tasks with real-life connections per lesson exceeds any other country by far. This tradition goes back more than 500 years, when the earliest mathematics textbooks in the Dutch language consisted entirely of tasks, in which mathematics was put to use in commercial contexts. In this chapter characteristics of contexts in mathematics tasks in the Netherlands are studied. Underlying frame is the notion of usefulness, which is a perception by students on future practices outside school. A distinction is made betwe…