The aim of this paper is to document the development of a method for detectionand quantification of Polychlorinated biphenyls (PCB) in soil using GasChromatography (GC) connected to a Quadrupole Mass Spectrometer (MS) via aninternal standard (CB189). The method developed is performed in conjunction withthe information provided by the Swedish environmental agency (Svenskanaturvårdsverket, SNV) in regards to PCB limits for sensitive land usage. The steps ofthe method and maintenance of the GC/MS are used to create a user manual andan attempt at transformative learning is done in an effort to teach the staff atLjungaLab AB so that at the very least, independent analysis can be run and at best,new methods and application are independently developed for the GC/MS. Anevaluation of the teaching efforts is also done to assess what grade of learning isachieved. / Syftet med denna uppsats är att dokumentera utvecklingen av en metod fördetektion och kvantifiering av polyklorerade bifenyler (PCB) i jord med hjälp avgaskromatografi (GC) ansluten till en masspektrometer (MS) och med användningav en intern standard (CB189). Metoden som utvecklats skapades med hjälp avuppgifter från det svenska naturvårdsverket (SNV) angående PCB-gränser för känsligmarkanvändning. Därefter skapades en användarmanual som beskriver stegen imetoden och även underhåll av GC/MS. Personalen på LjungaLab AB undervisadesi hur man använder och underhåller instrumenten för att, åtminstone, kunna köraoberoende analyser, och i bästa fall, utveckla nya metoder och tillämpningarsjälvständigt. Det sistnämda är ett försök till transformativ lärande. En utvärdering avlärarinsatser sker också för att bedöma vilken grad av lärande som uppnås.

The purpose of this three-article dissertation was to expand knowledge and theory regarding digital tool use in biology laboratory courses, such as microbiology, which requires specific laboratory skill development through the perception of instructors and students. Article 1 establishes the broad digital literacy and fluency problem in education by providing definitions and the context behind digital literacy fluency and its impact on acquisition of knowledge in digital learning environments. The study provided a picture of the lack of knowledge about the use of digital tools in education and practical problems around appropriate implementation, infrastructure, and preparedness. Article 2 presents results of a literature research study about the foundational, pandemic-induced, and current digital tool use in biology and microbiology lab courses. Recommendations for improvement in digital tool implementation, pedagogical approach, and appropriate selection to meet learning outcomes were provided. Article 3 describes a 3-layered study to build a new instrument to understand minority-student perceptions of identity and digital literacy and technology barriers on student success in STEM courses. The study identified challenges and benefits of digital tool use in virtual microbiology lab courses, unique challenges of underrepresented populations, and the need to develop an instrument to capture the context of this unique population.

The diploma thesis deals with the method of using computer simulations in education, with a focus on medicine. It also presents possible usage of computer simulations in other fields. The thesis presents possible usage of computer simulation to support the education, analyses of effective approaches and possible barriers that may arise during the implementation. Practical research is based on qualitative analysis of current situation of using simulations at medical faculties in the Czech republic. Powered by TCPDF (www.tcpdf.org)

Abstract in English, Afrikaans and Venda / Constructivism is a relatively recent theory of learning which focuses on using learner-centred strategies in learning. Reform efforts in education in Zimbabwe have been aimed at incorporating constructivist-inspired strategies in the classroom, with mixed results. Some teachers continue to prefer traditional approaches to learning in their classrooms, despite these being teacher-centred and generally looked down upon. The study examined the perceptions of primary school student teachers regarding the practical application of constructivism in the classroom. A qualitative research design was adopted, and the study was grounded in a constructivist and interpretivist paradigm aimed at understanding perceptions emanating from the lived experiences of the student teachers. In all, eight student teachers were sampled for the study by means of purposive, convenience and stratified random sampling. Data was collected through a literature review, lesson observations and semi-structured individual interviews. The rigour of the study was maintained by ensuring trustworthiness and the credibility of the findings. Ethical issues were adhered to. Data was analysed using Tesch’s method of data analysis, through which the researcher identified categories and themes, and reported on in narrative format. The study findings indicate that student teachers have a positive perception of the practical application of constructivism in learning. Participants expressed the view that the practical application of constructivism leads to deeper learning and greater understanding by learners. Participants nevertheless stated that in their efforts to implement constructivism in learning and teaching during their practicums they experienced a lack of support from mentor teachers and shortages of resources. Considering these findings, the researcher made several recommendations to various stakeholders with the aim of helping student teachers to be more effective constructivist teachers. The recommendations include the need to carry out more research on the constructivist learning theory and its practical application in the classroom as well as encouraging teachers to apply constructivist learner-centred strategies in their classrooms. The researcher also made recommendations for further research. / Konstruktivisme is ʼn leerteorie wat betreklik nuut is en wat fokus op die gebruik van leerdergesentreerde strategieë vir leer. Inisiatiewe vir opvoedingshervorming in Zimbabweis daaropgerig om konstruktivisme-geïnspireerde strategieë in die klaskamer te inkorporeer – met gemengde resultate. Sommige onderwysers verkies om steeds tradisionele benaderings tot leer in hul klaskamers te volg, al is dit onderwysergesentreerde benaderings waarop daar oor die algemeen neergesien word. In hierdie studie is die persepsies van laerskool studentonderwysers rakende die praktiese toepassing van konstruktivisme in die klaskamer ondersoek. ʼn Kwalitatiewe navorsingsontwerp is gebruik en die studie is gegrond in ʼn konstruktivistiese en interpretivistiese paradigma wat ten doel het om die persepsies vanuit studentonderwysers se werklike (‘lived’) ervarings, te verstaan. ʼn Steekproef is onder altesaam agt studentonderwysers gedoen deur middel van doelbewuste steekproefneming, gerieflikheidsteekproefneming en gestratifiseerde ewekansige steekproefneming. Data is ingesamel deur middel van ʼn literatuurstudie, leswaarnemings en semi-gestruktureerde individuele onderhoude. Die akkuraatheid van die studie is gehandhaaf deur betroubaarheid en die geloofwaardigheid van die bevindinge te verseker. Algemeen ooreengekome etiekvoorskriftewat by die meeste instellings geld, is nagekom.Data is ontleed met behulp van Tesch se metode van data-ontleding, en sodoende kon die navorser kategorieë en temas identifiseer en in narratiewe formaat daaroor verslag doen. Die navorsingsresultate toon dat studentonderwysers ʼn positiewe persepsie van die praktiese toepassing van konstruktivisme in leer het. Deelnemers het hul oortuiging gedeel dat die praktiese toepassing van konstruktivisme, tot ʼn dieper vlak van leer en beter begrip by leerders lei. Deelnemers het egter ook aangedui dat hulle ʼn gebrek aan ondersteuning van mentoronderwysers, sowel as ʼn tekort aan hulpbronne, ondervind het in hul pogings om konstruktivisme in leer en onderrig te implementeer tydens hul praktiese onderwys. Met inagneming van hierdie bevinding doen die navorser verskeie aanbevelings aan verskillende belanghebbers, met die doel om studentonderwysers te help om meer doeltreffend in konstruktivistiese onderwys te wees. Die navorser hetook aanbevelings vir verdere navorsing gedoen. / Thyeori ya u fhaṱa nḓivho na mihumbulo miswai tou vha thyeori ya u guda ya zwinozwino yo sedzaho kha zwiṱirathedzhi zwo ḓisendekaho nga mugudi kha u guda. Nungo dza u vhuedzedza pfunzo Zimbabwe dzo livhiswa kha u ṱanganyisa zwiṱirathedzhi zwa u fhaṱa zwo ṱuṱuwedzwaho kiḽasini, na mvelelo dzo ṱanganyiswaho. Vhaṅwe vhadededzi vha khou bvela phanḓa na u takalela u shumisa maitele a kale a u guda kiḽasirumuni, naho izwi zwi tshi ḓisendeka nga mudededzi na u dzhielwa fhasi. Ṱhoḓisiso yo sedzulusa kuvhonele kwa vhadededzi vha matshudeni vha tshikolo tsha phuraimari musi zwi tshi ḓa kha u shumisa nyito ya thyeori ya u fhaṱa nḓivho na mihumbulo miswa kiḽasirumuniHo shumiswa kuitele kwa ṱhoḓisiso ya khwaḽithathivi, ngudo yo ḓitika nga tshiedziswa tsha u fhaṱa nḓivho na muhumbulo miswa na u ṱalutshedzayo livhiswaho kha u pfesesa kuvhonele kubvaho kha tshenzhemo ine ya khou itea zwenezwo nga vhadededzi vha matshudeni.Kha vhadededzi vha matshudeni vhoṱhe vha malo, vhe vha itwa tsumbonanguludzwa kha ngudonga nḓila ya zwine zwa khou sedzwa khazwo, u swikelelea na tshigwada tshiṱuku tsho nangwaho. Data yo kuvhanganywa nga kha u sedza hafhu maṅwalwa, u sedza ngudo na inthaviwu dza u vhudzisa muthunga muthu dzo dzudzanywaho. Ndeme na u itwa nga vhuronwane ha ngudo zwo itwa nga u vhona zwauri hu na u fulufhedzea na u khwaṱhisedzwa ha mawanwa. Mafhungo a vhuḓifari e a tendelaniwa khao nga u angaredza nga zwiimiswa zwinzhi o tevhedzwa. Data yo saukanywa hu tshi shumiswa kuitele kwa Tesch kwa u saukanya data, hune muṱoḓisisi a topola khethekanyo na thero, na u vhigwa nga nḓila ya u tou ṱalutshedza. Mawanwa a ngudo o sumbedzisa uri vhadededzi vha matshudeni vha na mbonalo yavhuḓi ya nyito i re khagala ya u fhaṱa nḓivho na mihumbulo miswa kha u guda. Vhadzheneleli vho bvisela vhupfiwa havho khagala uri nyito dzi re khagala dza u fhaṱa nḓivho na mihumbulo miswa zwi livhisa kha vhudzivha ha u guda na u pfesesa huhulwane nga vhagudiswa. Vhadzheneleli naho zwo ralo vho bula zwauri kha nungo dzavho dza u shumisa thyeori ya u fhaṱa nḓivho na mihumbulo miswa kha u guda na u funza nga tshifhinga tshavho tsha ngudo dza nyito vho tshenzhela u shaya thikhedzo u bva kha vhadededzi vhane vha khou guda khavho na ṱhahelelo ya zwiko. Musi hu tshi khou dzhielwa nṱha mawanwa aya, muṱoḓisisi o ita themendelo dzo vhalaho kha vhadzhiamikovhe vho fhambanaho hu na nḓivho ya u thusa vhadededzi vha vhagudiswa uri vha vhe vhadededzi vha re na vhukoni kha u fhaṱa nḓivho na mihumbulo miswa. Muṱoḓisisi o dovha a themendela ṱhoḓisiso i yaho phanḓa. / Psychology of Education / Ph. D. (Psychology of Education)