Many students have difficulty of learning abstract and complex topic in chemistry. This study investigated how students develop their understanding of abstract and complex topics of chemistry with the aid of visualizing tools: animation, simulation and video. A particular focus of this investigation was to assess to what extent the uses of pedagogy based technology (PBT) is effective in learning chemistry. The combined effect of animation, simulation and video clips enable learning by doing and provide opportunity to explore the abstract and complex lessons of chemistry. The research was conducted with sequential embedded mixed research (quasi experimental and Explanatory) case study design. The experiment was carried out with second year chemistry students include 90(14 female and 76 male) students, 12 male chemistry lecturers and the college heads. The students were constituted 45 Control group and 45 Treatment groups. The groups were non-equivalent (convenient samples), suggesting that randomization was not possible as the students were in intact classes. To apply animation, simulation and video in supporting student-centered learning activities of electrochemistry for second year students flash and micro media player were used. The treatment group was trained for two weeks how to operate and use animation, simulation and video software. Pre and Post tests were administrated to the target groups. The effectiveness of PBT was also evaluated by administrating separate Schedule containing open and closed ended questions. The comments and ratings obtained from the learners‟ and lecturer insights provided the basis for the learning impact of the study. The result obtained from the vi experiment and responses of the schedule shows that PBT improves the performance of students. Therefore, to make the abstract and complex concepts of chemistry easy and clear Electrochemistry learning should be supported by animation simulation and video. An extended study may help to understand the multi sensory benefit of Pedagogy-Based-Technology. Thus, a possible extension to this study should cover a variety of universities and should aim at evaluating its effectiveness in various context and subjects‟. / Science and Technology Education / D. Phil. (Mathematics, Science and Technology Education (Chemistry Education))

This dissertation surveyed the validities of teaching the chemistry of water purification in South African schools using locally available materials (LAM) through the scientific inquiry (SI) approach. The researcher randomly selected four secondary schools that provided a small and purposive study sample of thirty-two Grade 11 learners and four teachers. The research design applied a mixed-method approach, consisting of qualitative and quantitative methods of data collection. Within this approach, the outcome of SI instruction that integrated LAM was compared with that of conventional instruction through a quasi-experimental control groups design. The researcher identified in the analysis of interviews and questionnaires the most complex aspects of the chemistry of water purification for learners to understand as redox reactions, acid-base systems, precipitations, and chlorination. However, the use of LAM through the scientific inquiry approach made it easier for learners to understand the concepts. The high mean scores ( =80.88; SD=10.28) in Research-based Test 2 (RBT2), of the experimental groups taught through SI signified that those learners immensely benefited from an active and collaborative learning environment. The lowly scores ( =61.69; SD=4.21) of control groups could be attributed to a linear and passive participation of learners in the conventional classroom instruction. The marks of the two groups in post-test RBT2 were paired and contrasted using GraphPad software. The results showed that t =6.699, df =21 with a significant value of 0.0001, which is less than 0.05 (p<0.05), hence it can be inferred that the difference between the means of the two groups was not only statistically important but also worth an explanation. The higher performance scores in RBT2 and the Rubric Assessment Tool (RAT) in experimental groups represents that the intervention was successful in the implementation of instructional design in the the study. In addition, the learners had mastered the crucial aptitudes that included self-discipline in understanding, cooperative learning, searching relevant text on topic, hands-on or laboratory practice and logical thinking in problem solving by working through the SI activities that used LAM. / Mathematics, Science and Technology Education / M. Sc. (Mathematics, Science and Technology Education with specialization in Chemistry Education)

Many students have difficulty of learning abstract and complex topic in chemistry. This study investigated how students develop their understanding of abstract and complex topics of chemistry with the aid of visualizing tools: animation, simulation and video. A particular focus of this investigation was to assess to what extent the uses of pedagogy based technology (PBT) is effective in learning chemistry. The combined effect of animation, simulation and video clips enable learning by doing and provide opportunity to explore the abstract and complex lessons of chemistry. The research was conducted with sequential embedded mixed research (quasi experimental and Explanatory) case study design. The experiment was carried out with second year chemistry students include 90(14 female and 76 male) students, 12 male chemistry lecturers and the college heads. The students were constituted 45 Control group and 45 Treatment groups. The groups were non-equivalent (convenient samples), suggesting that randomization was not possible as the students were in intact classes. To apply animation, simulation and video in supporting student-centered learning activities of electrochemistry for second year students flash and micro media player were used. The treatment group was trained for two weeks how to operate and use animation, simulation and video software. Pre and Post tests were administrated to the target groups. The effectiveness of PBT was also evaluated by administrating separate Schedule containing open and closed ended questions. The comments and ratings obtained from the learners‟ and lecturer insights provided the basis for the learning impact of the study. The result obtained from the vi experiment and responses of the schedule shows that PBT improves the performance of students. Therefore, to make the abstract and complex concepts of chemistry easy and clear Electrochemistry learning should be supported by animation simulation and video. An extended study may help to understand the multi sensory benefit of Pedagogy-Based-Technology. Thus, a possible extension to this study should cover a variety of universities and should aim at evaluating its effectiveness in various context and subjects‟. / Science and Technology Education / D. Phil. (Mathematics, Science and Technology Education (Chemistry Education))

Abstracts in English, Zulu and Setswana / This study investigated the feasibility of using WhatsApp Messenger as a tool to enhance the professional identity and inquiry-based pedagogy through the professional development of university chemistry teachers. The epistemological interpretive paradigm was used to guide the study. The study assumed a naturalistic, exploratory investigation. The qualitative research methodology was used to conduct the study. Nine university teachers were purposively sampled from three universities (three teachers from each university) for the study. Data were collected through semi-structured interviews, participant observations, and focus group discussions. Data analysis was completed using the thematic networks analysis. Ethics considerations were observed by not disclosing personal information of the participants or information about the universities where they represented. This study was guided by four theoretical underpinnings: the connectivism theory, the transformative learning theory, the expectancy-value theory, and the dual systems theory. The primary research question guiding this study was: How does the professional identity of university chemistry teachers develop as they learn IBP through WhatsApp Messenger? A two-pronged approach was used in the research: (1) comparing the professional identity of the teachers before and after the course, and (2) observing and describing the professional identity process as the teachers undertook the course. The results from the interviews conducted before the teachers undertook the WhatsApp Messenger-based IBP course showed that most teachers had a negative professional identity. They had become teachers for a variety of reasons, but they did not consider themselves teachers and believed they would leave university teaching if opportunities arose in the industry. They had no formal qualifications in pedagogy, and they did not believe that such knowledge was necessary. The majority of these teachers used teacher-centred approaches. Results from participant observations during the WhatsApp Messenger-based IBP course showed that the course slowly imparted to the teachers the norms associated with not only IBP, but other teaching approaches as well. WhatsApp Messenger provided a flexible online platform where the teachers interacted and exchanged ideas without the need to meet in a physical space. The results from the interviews conducted after the teachers participated in the WhatsApp Messenger-based IBP course showed that the participants' professional identity had changed positively. They now recognised the importance of pedagogy in teaching, they positively identified with the teaching profession, and some were considering acquiring formal qualifications in pedagogy. / Lolu cwaningo beluphenya ithuba lokusetshenziswa kwangempela kwe-WhatsApp Messenger njengethuluzi lokuqinisa isithombe sesisebenzi kanye nohlelo lokufundisa olwencike phezu kophenyo lothisha besifundo seKhemistri (chemistry) enyuvesi, ngohlelo lokuthuthukisa abasebenzi. Uhlelo lwepharadayimu echazayo ye-ephistemoloji lwasetshenziswa ukuhlahla indlela yesifundo, okuyindlela enqume ukulandela indlela yemvelo, ephenyayo. Umethodoloji wocwaningo olwencike kuKhwalithi (Qualitative) lusetshenzisiwe ukwenza ucwaningo, ndawonye nothisha basemanyuvesi ayisishiyagalolunye abakhethwe ngenhloso kumanyuvesi amathathu (abathathu kwinyuvesi eyodwa). Idatha yaqoqwa ngokusebenzisa izinhlolovo ezimbaxambili (semi-structured interviews), ngokubheka izenzo zomdlalindima (participant observation) kanye nezingxoxo zeqembu eliqondiwe (focus group discussions), kanti ukuhlaziywa kwedatha kwenziwa kwaqedwa ngokusebenzisa uhlelo lokuhlaziya oluwuthungelelwano lwendikimba (thematic network analysis). Kubonakele ukulandelwa komgomo wokuziphatha ngokungadaluli ulwazi lomuntu ongumdlalindima noma ulwazi olumayelana namanyuvesi ababewameleyo. Ucwaningo beluholwa yizinhlaka ezine zethiyori: i-connectivism theory, i-transformative learning theory, i-expectancy-value theory kanye nama-dual systems theory. Umbuzo wokuqala wezocwaningo ohola ucwaningo bewuthi: Ngabe isithombe sobizo lobuthishela wekhemistri enyuvesi sithuthukiswa kanjani ngesikhathi befunda uhlelo lwemfundo eyencike ekuphenyeni (inquiry-based pedagogy (IBP) ngokusebenzisa i-WhatsApp Messenger? Indlela embaxambili iye yasetshenziswa: 1) ukuqhathanisa isithombe sobizo lobuthishela ngaphambi nangemuva kwesifundo,, kanye no-2) baqhathanisa isithombe sobizo lobuthishela sothisha ngaphambi nangemuva kwesifundo, kanye no 2) babheke futhi bachaza uhlelo lwezimpawu zokwakha isithombe sobizo lobuthishela njengoba othisha baye badlala indima kulesi sifundo. Imiphumela evela kwizinhlolovo ezenziwe ngaphambi kokuba othisha bahambele isifundo se-WhatsApp Messenger-based IBP, ikhombise ukuthi iningi lothisha libe nesithombe sobizo esibi. Baye bafundela ubuthishela ngezizathu ezahlukahlukile, kodwa abakaze bazibona bangothisha futhi baye bacabanga ukuyeka inyuvesi uma ngabe kuvela amathuba kwimboni. Abakaze babe neziqu zokufundisa, kanti abazange bakholwe ukuthi ulwazi olunjalo kwakunesidingo sokuba nalo, kanti iningi lothisha lwalandela indlela izindlela ezencike kuthisha. Imiphumela evela ekubukeni izenzo zothisha ngesikhathi sesifundo se-IBP ikhombise ukuthi isifundo kancane kancane sinikeze othisha izimfundiso ezithile, kanti futhi nezinye izindlela zokufundisa. Uhlelo lwe-WhatsApp Messenger lunikeze inkundla ye- inthanethi engenamngcele lapho othisha bebahlangana futhi baphakelane ngemibono nhlangothi zombili ngaphandle kwesidingo sokuhlangana endaweni ephathekayo. Ngemuva kwesifundo se-IBP abadlalindima baye babika ukuthi babone izithombe zobizo lwabo zizinhle kakhulu. Manje sebeyakwazi ukubaluleka kwendlela yephedagogi ekufundiseni, bazibona behambisane kahle kakhulu nobizo lobuthishela. Kanti abanye baze bacabanga ukuthola ezinye iziqu ezisemthethweni zobizo lobuthisha. / Thuto e, e dirile dipatlisiso tsa kgonagalo tsa go dirisa WhattsApp Messenger jaaka sediriso sa go tlotlomatsa tlhaolo ya borutegi le potsiso theo ya thuto ya sekolo ya barutabana ba Yunibesithi ba thuto ya khemise, ka tlhabololo ya borutegi. Go dirisitswe pharataeme ya phetolo ya episitemoloji go kaela thuto e e tsaletseng botlhagiso jwa tlhago le tlhotlhomiso. Thutatsela ya patlisiso e e boleng e ne ya dirisiwa go tsamaisa thuto, le barutabana ba ba robongwe ba diyunibesithi tse di neng di na le maikemisetso a bosupi go tswa mo diyunibesithi tse tharo (ba bararo go tswa mo go nngwe le nngwe ya tsona). Didatha di ne di kgobokantswe ka seka-popego sa dipuisano, kelotlhokomelo ya batsayakarolo le tsepamiso ya setlhopha sa dipuisano, fa tshekatsheko ya datha e feditswe ka go dirisa tshekatsheko ya kgokagano ya thitokgang. Kelotlhoko ya maitshwaro e ne e na le tlhokomelo ka go se senole tshedimosetso ya batsayakarolo kgotsa tshedimosetso ka diyunibesthi tse e leng baemedi ba tsona. Thuto e ne e kaelwa ke metheo e mene ya tiori: tiori ya kopano, tiori ya phetogo ya thuto, tiori ya boleng jo bo solofetsweng le tiori ya thulaganyo. Potso e kgolo ya patlisiso e e kaelang thuto e ne e le: tlhaolo ya borutegi e gola jaang mo barutabaneng ba yunibesithi ba thuto ya Khemise fa ba ithuta thuto ka theo-potsiso ya petakoji (IBP) ka WhatsApp Messenger? Go thapilwe tlhagiso e e tlhagelelang gabedi 1) go farologanya tlhaolo ya barutabana pele le morago ga khoso le 2) go ela tlhoko le go tlhalosa tshedimosetso ya tlhaolo ya borutegi jaaka barutabana ba batsayakarolo mo khosong. Dipholo tsa tsamaiso ya potsotherisano e e neng e le teng pele ga go tsena khoso ya WhatsApp Messenger-based IBP, di bontsha gore ba bantsi ba na le tlhaolo ya borutegi jo bo sa siamang. Ba ne ba nna barutabana ka mabaka a a rileng a a sa tshwaneng fela ba sa ipone sentle jaaka barutabana, ka megopolo ya go tlogela Yunibesithi fa ditšhono tsa intasetari di tlhagelela. Ba ne ba sena boatlhodi jwa semmuso ba petakoji, mme ba ne ba sa dumele gore kitso e jaana e a tlhokagala, ka bone bontsi bo ne bo tsaletswe ditlhagiso tsa go tsepama mo borutabaneng. Dipholo tsa kelotlhoko ya batsayakarolo mo nakong ya khoso ya IBP di bontsha gore khoso e e neetse barutabana ditlwaelo tse di rileng tse di sa tsamaisaneng fela le IBP gape le ditlhagiso tse dingwe tsa borutabana. WhatsApp Messenger e kgona go abelana mo polatefomong e e bonolo ya inthanete mo barutabaneng ba ba tlhaeletsanang le go abelana dikakanyo kwa ntle ga tlhokego ya go kopana mo lefelong ka sebele. Morago ga khoso ya IBP batsayakarolo ba begile gore ba leba ditlhaolo tsa bone tsa borutegi ka letshwao la koketso. Jaanong ba lemogile botlhokwa jwa petakoji mo go ruteng, se se tlhagisiwa ka letshwao la koketso mo boruteging jwa go ruta, ba bangwe ba ntse ba akanya go nna le boatlhodi jwa semmuso ka mo petakoji. / Curriculum and Instructional Studies / D. Phil. (Curriculum Studies)