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23 October 2023 | Story André Damons | Photo Rosina Mothiba
Education students present research at Faculty’s Annual Postgraduate Research Conference
A total of 145 postgraduate students and 55 staff members attended the University of the Free State’s (UFS) Faculty of Education Annual Postgraduate Research Conference Social Media.

“Exploring Grade 12 learners’ substance abuse and its influence on their academic performance”, “The role of the School Management Team in addressing Homophobic Bullying in Xhariep public schools” and “Exploring the use of YouTube videos in the teaching and learning of fractions in Grade 4.” 

These were some of the interesting research titles that were presented at this year’s University of the Free State’s (UFS) Faculty of Education Annual Postgraduate Research Conference. The two-day conference, now in its fifth year, took place from 6-7 October with the theme “Changing the Educational Landscape in Africa through ongoing research”. The conference is one of the faculty’s main events supporting its postgraduate students and ensuring time for completion for each one of them. 

A total of 145 postgraduate students and 55 staff members attended the conference where the faculty’s postgraduate students get exposure to present their research in front of an academic audience.

Prof Loyiso Jita, the Dean of the Faculty of Education, delivered the keynote address and spoke at length about the graduation rates of master’s and doctoral students in the faculty. He challenged the presenters to hold themselves and each other accountable for progression in their studies and to produce high-quality research that will position them and the university in good stead nationally and internationally. 

New teaching approach   

In the study “Exploring the use of YouTube videos in the teaching and learning of fractions in Grade 4”, MB Tsoaela (PhD student), explores the teaching and learning of fractions using YouTube videos in Grade 4. In trying to answer the main research question, “How do Grade 4 educators teach fractions utilising YouTube videos?” The researcher states that: “The use of YouTube videos is a very new way of learning in the South African context. This new teaching approach has proven to be exciting for young learners in Grade 4 because it has many options like animations, colourful videos, and pictures. Even though YouTube learning is exciting and fun, its implementation has challenges such as teachers wanting to use a chalkboard. Another challenge is the current load shedding.” 

Psychosocial implications of school violence

Another PhD student, MDL Stack, investigated how to design an assessment for Higher Education that ChatGPT is unable to provide an answer that will pass without human intervention in his research paper titled “Investigating an assessment design that prevents students from using ChatGPT as the sole basis to pass assessment in Higher Education at undergraduate level”. He argued that “ChatGPT has presented significant challenges to lecturers when they set assessments at tertiary level. 

“There is enormous potential for students to attempt to use ChatGPT to write and pass assessments designed at undergraduate level,” the researcher writes. 

Another research paper looked at the psychosocial implications of school violence on teachers in Motheo District public schools in the Free State, arguing that school violence against teachers continues to be a phenomenon that is increasingly disturbing, while having serious implications on South African and global societies. Many teachers suffer social and psychological stress but not much has been done to understand learner-induced violence against teachers.

Exposure for students  

Prof Matseliso Mokhele-Makgalwa, the acting Vice-Dean Research and Postgraduate Studies, says the purpose of the conference is to give exposure to master’s and PhD students to present their work in front of an academic audience (staff and students) as well as for them to get comments and feedback from experts and fellow students on their on-going research studies. 

“The conference is about sharing the ongoing research being done by our master’s and doctoral students and/or reporting on their preliminary and final outcomes of the students who are about to graduate. By presenting their work, they disseminate key findings, build relations with other students and staff, and create inter- and multi-disciplinary networks for future collaborations,” says Mokhele-Makgalwa.

News Archive

Research helps farmers save with irrigation
2017-02-15

Description: Irrigation research Tags: Irrigation research

Marcill Venter, lecturer in the Department of
Agricultural Economics at the University of the
Free State, has developed the mathematical
programming system, Soil Water Irrigation
Planning and Energy Management in order to
determine irrigation pump hours.
Photo: Rulanzen Martin

Her advice to farmers is that they should make sure they are aware of the total cost (investment and operating costs) of an irrigation system. In most cases the investment cost is low, but the operating cost over the lifetime of the system is high.

“It is very important to have a look at the total cost and to install the most economic system,” says Marcill Venter, lecturer at the University of the Free State (UFS), who has done research on the economic sustainability of water-pipe systems.

Irrigation systems important components for farming
This research comes at a time when many farmers are relying on their irrigation systems due to persistent drought and low rainfall during 2016. South Africa has also experienced an abnormal increase in electricity tariffs in recent years. Due to tariff increases which threaten the future profitability of irrigation producers, the Water Research Commission (WRC) has launched and financed a project on the sustainable management of irrigation farming systems. “I had the opportunity to work on the project as a researcher,” says Venter.

The heart of every irrigation system is the water pipes that bring life to crops and livestock, and this is what Venter’s research is about. “Water pipes are part of the whole design of irrigation systems. The design of the system impact certain factors which determine the investment and operating costs,” she says.

Mathematical system to help farmers
Venter and Professor Bennie Grové, also from the Department of Agricultural Economics at the UFS, designed the Soil Water Irrigation Planning and Energy Management (SWIP-E) programming model as part of the WRC’s project, as well as for her master’s degree. “The model determines irrigation pump hours through a daily groundwater budget, while also taking into account the time-of-use electricity tariff structure and change in kilowatt requirements arising from the main-line design,” says Venter. The model is a non-linear programming model programmed in General Algebraic Modeling System (GAMS).

Design of irrigation system important for sustainability

The main outcome of the study is that the time-of-use electricity tariff structure (Ruraflex) is always more profitable than the flat-rate structure (Landrate). The interaction between the management and design of a system is crucial, as it determines the investment and operating costs. Irrigation designers should take the investment and operating cost of a system into account during the design process. The standards set by the South African Irrigation Institute (SAII) should also be controlled and revised.

Water-pipe thickness plays major role in cost cuts
There is interaction between water-pipe thickness, investment and operating costs. When thinner water pipes are installed, it increases the friction in the system as well as the kilowatt usage. A high kilowatt increases the operating cost, but the use of thinner water pipes lowers the investment cost. Thicker water pipes therefore lower the friction and the kilowatt requirements, which leads to lower operating costs, but thicker pipes have a higher investment cost. “It is thus crucial to look at the total cost (operating and investment cost) when investing in a new system. Farmers should invest in the system with the lowest total cost,” says Venter.

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