Abstract in English, Tswana and Xitsonga / Education officers based at science centres and museums play a significant role in teaching the visiting learners science. However, little is known about their teaching practices at these centres. The purpose of this study was to investigate the teaching practices of education officers when teaching science in a science centre environment. The focus of this study was on the education officers’ knowledge and instructional strategies used in teaching science at a science centre in Pretoria, Gauteng province. A qualitative case study approach was used. Data was collected from the three participating education officers using semi-structured interviews and observations. Data was analysed separately from each case using education officers’ knowledge framework guidance. The findings from this study indicate that although education officers have shown an adequate content knowledge in teaching science at the science centre their teaching method was teacher-centred and non-interactive and show-and-tell strategies were more common amongst the education officers. The study also revealed that education officers did not use their resources/exhibits effectively in teaching science. It is recommended in this study that intensive training of education officers is required before they can interact with the visiting learners. / Baokamedi ba thuto ba kwa mafelong a maranyane le dimusiamo ba tshameka karolo e e botlhokwa mo go ruteng barutwana ba ba etileng dithuto tsa maranyane. Mme goitsiwe go le gonnye ka mekgwa e ba e dirisang kwa mafelong a. Morero wa thuto e ne e le go tlhatlhoba mekgwa ya baokamedi ba thuto fa ba ruta dithuto tsa maranyane mo tikologong ya lefelo la maranyane. Ntlhakgolo ya thuto e e ne e lebile kitso le mekgwa e e dirisiwang mo go ruteng maranyane mo lefelong la maranyane kwa Pretoria, porofensing ya Gauteng. Mokgwa wa boleng ba kgetsi thuta o dirisitswe. Tshedimosetso e tserwe mo baokameding ba thuto ba bararo ba ba neng ba tsere karolo ka mokgwa wa dipotsolotso tsa seka-kago le tebelelo. Tshedimosetso e tlhatlhobilwe kgetsi le kgetsi go dirisiwa kgakololo ya lenaneo la kitso ya baokamedi ba thuto. Dipitlhelelo tsa thuto e di supa gore le ga baokamedi ba thuto ba bontsha kitso e e lekaneng mo go ruteng maranyane kwa lefelong la dithuto tsa maranyane mekgwa ya bone ya go ruta e ne e lebagane bone gape e sena kamano mo go dimo ga moo mekgwa ya go buwa le go bontsha e ne e le tlwaelo gareng ga baokamedi ba thuto. Thuto e bontshitse gape gore baokamedi ba thuto ba ne ba sa dirisi didiriswa ka natlafalo mo go ruteng maranyane. Kgakololo go tswa mo thutong eno ke gore baokamedi ba thuto ba tlhoka katiso e e utlwalang pele ba ka kopana le baithuti ba ba etang. / Vadyondzisi lava kumekaka eka ndhawu ya science na museum va tlanga xiphemu xa nkoka swinene eku dyondziseni ka vadyondzi lava va endzelaka ndhawu leyi. Hambi swiri tano, i swi ntsongo leswi tivekaka hi madyondziselo ya science eka ndhawu leyi. Xikongomelo nkulu xa dyondzo leyi akuri ku lavisisa tindlela ta madyondziselo ya vadyondzisi loko va dyondzisa tidyondzo ta science endhawini leyi ya tidyondzo science. Dyondzo leyi ayi kongomisiwile eka vutivi na tindlela leti vadyondzisi va letelaka ha kona vadyondzi edhawini leyi ya science ePitori, eka Xifundzha nkulu xa Gauteng. Maendlelo ya qualitative case study ya tirhisiwile eka vulavisisi lebyi. Vuxokoxoko byi hlengeletiwile ku sukela eka vadyodzisi vanharhu va science hi ndlela ya mbulavurisano na vulangutisisi bya vukheta swinene. Vuxokoxoko lebyi byi hleriwile hi ku hambana hambana hi kuya hi vutivi bya vadyondzisi lava vanharhu. Hambi leswi vadyondzisi lava va nga kombisa vutivi byo ringanela no twisisa tidyondzo ta science eka ndhawu leyi, swi kumekile leswaku madyodziselo ya vona aya pfumeleli vadyondzi ku va teka xiphemu eku tirhiseni ka swikombiso na switirhisiwa swo pfuneta ku twisisa tidyondyo ta science. Vadyondzisi a va tirhisa ndlela yo vulavula no komba switithisiwa na swikombiso swo pfuneta tidyondzo leti ehandle ko pfumelela vana ku tirhisa swilo leswi swa science. Ku yisa emahlweni, swi kumekile leswaku vadyondzisi a va tirhisi switirhisiwa kumbe swikombiso swo va pfuneta eka dyondzo ya science hi ku hetiseka. Hi ku landzelela dyondzo leyi, ku tsundzuxiwa leswaku vadyondzisi va kuma dyondzo yo enta no enela ku suka eka va vutivi byo antswa va nga si nyikiwa mpfumelelo wo dyondzisa vana tidyondzo ta science. / Science and Technology Education / M. Ed. (Specialisation in Natural Science Education)

Abstract in English, Sepedi and Sesotho / In this thesis, the researcher used an explanatory sequential mixed methods research design to investigate the role of English academic vocabulary on reading comprehension of grade 11 English First Additional Language (EFAL) learners in the Free State province, Fezile Dabi district in South Africa. The current study is an attempt to determine whether the breadth and depth of vocabulary knowledge have a bearing on grade 11 EFAL learners' reading comprehension, and to examine which one of these variables, that is, breadth or depth of vocabulary knowledge, makes a more important contribution to reading comprehension. It also attempts to investigate the Vocabulary Learning Strategies (VLS) used by grade 11 EFAL learners. For the non-experimental quantitative study, the participants of the study were thirty EFAL learners who were chosen based on available sampling. To collect the relevant data, two tests measuring breadth and depth of vocabulary knowledge (Section A and Section B) and a reading comprehension were administered to all participants. To achieve its aim 1, two independent variables namely, the Vocabulary Levels Test (VLT) which measures vocabulary breadth and Word Associate Test (WAT) which measures vocabulary depth were used. Then, the dependent variable was the reading comprehension test in which the participants were asked to read the passages and answer some multiple choice questions. Pearson product-moment correlations and multiple regression were chosen as the dominant techniques for the statistical analyses. The results obtained from the analysis of the data indicated that while both depth and breadth of vocabulary knowledge play an important role in EFAL learners' reading comprehension performance, depth of vocabulary knowledge makes a more important contribution. The results further revealed that depth and breadth of vocabulary knowledge are positively correlated, that is, those learners who had large vocabulary size had a deeper knowledge of the words, too. Then, the findings from the qualitative study based on the data collected through eight focus group discussion participants about the VLS used by grade 11 EFAL learners, highlight that it is important to explore and broaden learners’ vocabulary learning strategic knowledge. Also, results reflect that learners can take control of their own vocabulary learning as long the teachers train and then offer them opportunities to learn and practice the strategies.The qualitative data for this study was analysed using the content analysis method. / Nyakisiso ye e tserwe ka mekgwa ye mentshi ye e hlakantshitsweng lebaka e le go nyakishisha ka karolo yeo polelo ya Sepediya poleloya tlatselletso e ralokang karolo dithutong tsa polelo ya go bala taodiso mphatong wa lesometee (11) polelong go bana kua porofenseng ya Foreistata e bitswang Fezile Dabi, districting (lefapheng) gona mo Aforika Borwa. Gonabjalo dithuto di ipontsha go ikemisetsa go tseba ka bophara le bogolo ba tsebo ka polelo ya sepedi ka seo e leng sona Mphatong wa le sometee (11), polelong ya tlatselletso ya bana ba mphato wa lesometee ka go bala ga taodisho. Go nyakega di nyakisiso ka mekgwa yeo oka e berekisang ke bana ba Mphato wa lesometee polelong ya tlatselletso. Go thuto yeo e tiilego batseakarolo ba masome a mararo (30) ba polelo ya tletselletso e leng bana ba sekolo bao ba kgethilweng ka mokgwa wa dinyakisiso tse di ntshitswego. Go humana palo ya mannete, dihlahlobo tse pedi (2) tseo ditlago go lekanetsa bogolo le bophara ba tsebo ya go bolela le go bala taodisho e filwe batseakarolo kamoka. Go humana maikemisetso a pele (1). Tseo di ikemetsego di bolelwe, le hlahlobo ya polelo ya mantswe eo e lekanyetsago polelo ka bophara e berekishitswe. Seo se ikemetsego e be ele go bala teko ya taodiso ye batseakarolo ba kgopetsweng go bala ditemana le go araba dipotsiso tse mmalwa tseo dikgethilweng. Dipoelo tseo di humanwego gotswa go dipalo tsa tseo ditserweng ka bophara le go bolela ga polelo kapa yona tsebo ya polelo yeo e ralokileng karolo e bohlokwa go polelo ya tlatselletso go baithuti ka go bala taodiso yeo e tsereng karolo ka bophara kapa bogolo ba tsebo ya polelo e dira gore go be bohlokwa gotseyeng karolo. Dipoelo go tswela pele di bontsha bogolo le bophora ka tsebo polelo di ya kopana di ya tsamaisana nang ka tsela ya maleba, Baithuti ba palo ya godimo bao ba nang le tsebo ya polelo yeo e tibileng ka mantswe le bona baya amega. Gotswa go dinyakisiso tseo di fitisisago go humanwe gore dipalopalo go tswa go dihlopa tse sesawi tseo kapa bao batsereng karolo ka mekgwa ya nyakisiso kapa tsebo ya polelo yeo e berekisitswego go bana ba Mphato wa bo lesometee (11) polelong ya tlatselletso e hlagisa gore go bohlokwa gore bogolo ba baithuti bainyakisisetse ka tsebo ya mekgwa ya polelo. Dipoelo di bontsha thuto ya polelo go barutegi bao barutiwago ba filwe monyetla wa go ithuta le go tsea karolo go mekgwa ya go ithuta e fapaneng. / Mokgwa ona o tswakilweng wa ho hlahloba karolo ya puo ya Senyesemane ka ho bala kutlwisiso ya diithuti tsa Sekolo sa Pele sa Puo ea Senyesemane sa Pele (EFAL) seprofinseng sa Free State seterekeng sa Fezile Dabi, Arika Borwa. Phuputso ya morao tjena ke boiteko ba ho bona hore na bophara le botebo ba tsebo wa mantswe di na le sebopeho sa ho bala sekolo sa EFAL, mme ho hlahloba e nngwe ya mefuta ena, ke hore, bophara kapa botebo ba tsebo ya mantswe, e etsa monehelo wa bohlokwa haholwanyane ho bala kutlwisiso. E boetse e leka ho batlisisa mekgwa ya ho ithuta ya mantswe (VLT) e sebediswang ke barutwana ba 11 EFAL. Bakeng sa dipatlisiso tse ngata, barupeluwa ba thuto ba ne ba e-na le diithuti tse mashome a mararo tsa EFAL tse kgethilweng di thehilwe ho sampole e fumanehang. Ho bokella boitsebiso bo nepahetseng, diteko tse pedi tse lekanyang le bophara ba tsebo ya mantswe (Karolo ya A le Section B) mme kutlwisiso ya ho bala e ne e tsamaiswa ho bohle ba barupeluwa. Ho finyella sepheo sa yona 1, mefuta e mmedi e ikemetseng, e leng. Tlhahlobo ya disebediswatsa vocabulary (VLT) e lekanyang tekanyao ya mantswe le Testing (WAT) e lekanyang e tibeleng ya mantswe e sebedisitsweng. Jwale, moelelo o itshetlehile ka ho bala teko ya kutlwisiso eo barupeluwa ba ileng ba koptjoa hore ba bale dipatlisiso le ho araba dipotso tse ngata. Diphello tse fumanweng ha ho hlahlojwa boitsebiso bo bontshiitse hore ho tseba hore boitsebiso bo bongata bo tebileng le bobopeho ba tsebo ya mantswe bo phetha karolo ya bohlokwa haholo. Diphello di ile tsa tswela pele ho senola hore tsebo le tsebo ya tsebo di tsamaisana hantle, ke hore, baithuti ba neng ba e-na le boholo ba di-vocabulary bana le tsebo e tebileng ya mantswe, hape. Jwale dithuto tse tswang thupelong ya boleng bo thehilweng boitsebisong ba dihlopha tse robedi tsa dipuisano tsa dihlopha tsa dipuisano ka sehlopha sa VLS se sebedisitsweng ka dihlopha tsa bo 11 ba EFAL di bontsha hore ke habohlokwa ho hlahloba le ho atolosa tsebo ya diithuti tsa ho ithuta tsebo. Hape, diphello di bontsha hore barupeluwa ba ka nka boikarabelo ba ho ithuta mantswe ha nako e telele matichere a ntse a kwetliswa mme jwale a ba fa menyetla ya ho ithuta le ho sebeisa manqheka. / Language Education, Arts and Culture / D. Phil. (Education)