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We present global and regional correlations between whole-rock values of Sr/Y and La/Yb and crustal thickness for intermediate rocks from modern subduction-related magmatic arcs formed around the Pacific. These correlations bolster earlier ideas that various geochemical parameters can be used to track changes of crustal thickness through time in ancient subduction systems. Inferred crustal thicknesses using our proposed empirical fits are consistent with independent geologic constraints for the Cenozoic evolution of the central Andes, as well as various Mesozoic magmatic arc segments currently exposed in the Coast Mountains, British Columbia, and the Sierra Nevada and Mojave- Transverse Range regions of California. We propose that these geochemical parameters can be used, when averaged over the typical lifetimes and spatial footprints of composite volcanoes and their intrusive equivalents to infer crustal thickness changes over time in ancient orogens.

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MEDCS / Department of Curriculum Studies and Education Management

MEd (Curriculum Studies) / Department of Curriculum Studies / Children who cannot read and write are a concern for both parents and teachers. The purpose of the study was to explore the challenges faced by teachers in teaching dyslexic children at intermediate phase in mainstream schools in the District of Vhembe, in Limpopo Province of South Africa. A qualitative research approach was utilised for the study. Semi-structured interviews were used to gather data from the teachers in the mainstream schools. The population of this study comprised of teachers who teach dyslexics and other children at intermediate phase in the mainstream public primary schools in the Dzindi Circuit of Vhembe District in Limpopo Province. Purposive sampling was used to select twenty four teachers who had a minimum of three years teaching experience from the eight schools under study. Data was analysed thematically. Major findings of the study are as follow: challenges faced by dyslexic children on identified competencies such as writing, reading, carrying instructions and confidence; their ability to recall information; parental involvement and overcrowded classrooms. The study recommends the effectiveness of teachers in using the differentiation method to help dyslexic children, availability of physical resources in the form of classrooms and learning materials, community awareness, in-service training for teachers and collaboration among the teachers, learners and parents.

A dissertation submitted to the Faculty of Education in partial fulfillment of the requirements for the Degree of Master of Education in the Department of Educational Psychology and Special Needs Education at the University Of Zululand, 2017 / The aim of this study was to investigate the relationship between texting language and language development amongst Intermediate Phase learners. The study, which used the quantitative approach, sought to determine the influence of learner characteristics on texting language, determine if learners use texting language in the written forms of English, determine if learners are able to write in the standard form of English, and ascertain if texting affects spelling.The target population were learners in the Intermediate Phase, which is learners from Grade 4 up to Grade 6. There were 213 learners who took part in the study. All these learners were from five African schools, and learnt English as a second language. The instrument used for data collection was divided into four sections: demographic characteristics, translation of texts from Standard English to texting language, translation of texts from texting language to Standard English and also spelling. The SPSS version 24 was used to analyse the results collected from the study. The findings of the study reveal that age and the grade that the learner is doing has no influence on texting and the learner’s language development. Gender has an influence on texting and the learner’s language development. Female learners were found to text more than male learners. There is also no relationship between learner’s access to cellular phones and their language development. Learners are texting and they know how to text irrespective of whether they own a cellular phone, have access to one or do not have access to one at all. However, the study revealed that there is a positive relationship between texting language and Standard English. Texting language cannot come into existence without one first learning and knowing the Standard English language.Based on the findings, the study recommended that teachers should recognise the importance of English language and should organise extra-curricular and co-curricular activities to enhance language development in learners. The Department of Education should promote and support activities that will help learners to improve their language skills.

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