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08 August 2025 | Story Martinette Brits | Photo Barend Nagel
Dr Rouxan Fouche
Dr Rouxan Fouché, Lecturer in the Department of Computer Science and Informatics at the University of the Free State, whose award-winning research explores the impact of language in multilingual computer science education.

Dr Rouxan Fouché, Lecturer in the Department of Computer Science and Informatics at the University of the Free State (UFS), earned national recognition when he received both the Best Informatics Paper and the Overall Best Paper awards at the 54th Annual Conference of the Southern African Computer Lecturers’ Association (SACLA 2025). Held in Bloemfontein from 30 July to 1 August, the conference brought together leading voices in computer science education from across the region. Dr Fouché’s award-winning paper, Beyond Language Barriers: Programme-Specific Effects of English Medium Instruction in South African Computer Science Education, explores the nuanced impact of language on student learning in multilingual computer science classrooms.

“It was incredibly humbling and exciting to receive this recognition,” said Dr Fouché. “When they announced the Best Informatics Paper Award, I was already thrilled, but when they called my name again for the Overall Best Paper Award, I was genuinely shocked.”

The paper, which investigates how English-medium instruction affects students differently across different types of modules, stood out for its relevance to both educational policy and classroom practice in multilingual contexts. “As a researcher, you hope your work will make an impact,” Dr Fouché reflected, “but to have it recognised at this level by peers across the computer science and informatics community in Southern Africa was beyond my expectations.”

Representing the UFS at SACLA added another layer of significance. “Our university has such a rich tradition in computer science and informatics education,” said Dr Fouché. “The Free State context, with our incredibly diverse student population representing all 11 official languages, provides a unique lens for understanding multilingual education. I was proud to show how the UFS is leading research into practical solutions for South African higher education challenges.”

 

Rethinking language barriers in STEM education

The award-winning study stemmed from a broader investigation into student attrition in computer science. “Language barriers represent just one component of the various factors I'm studying that affect student success and retention,” explained Dr Fouché. “Like many educators in South Africa, I knew that a very low percentage of our Department of Computer Science and Informatics students are native English speakers, yet we teach everything in English.”

What the research uncovered was unexpected. “Students with language difficulties weren't struggling uniformly across all modules as we might expect,” Dr Fouché said. “Instead, there were dramatic differences depending on the type of content.” In particular, programming modules seemed to pose very little additional difficulty for students with language barriers, while business-related modules presented significant challenges.

“The most significant finding was that programming education appears to naturally transcend language barriers,” said Dr Fouché. “We found negligible differences in perceived difficulty between students with and without language difficulties in core programming modules – effect sizes of just 0.017 to 0.041, which is essentially no difference.” Surprisingly, students with language difficulties actually found mathematics and physics modules easier than their English-proficient peers, while business modules showed the opposite trend.

“These findings suggest that instead of treating all technical subjects the same, we need programme-specific support strategies,” he said. “Computer science education might offer a more equitable pathway to technical careers for our multilingual student population.”

Dr Fouché hopes the findings will inform more tailored teaching approaches: “We should emphasise visual representations, multiple symbolic systems, and hands-on applications that play to students' compensatory strengths for mathematics and physics. We need targeted interventions for business-related modules and additional support for the dual cognitive load of processing both technical and business terminology simultaneously.”

 

A research journey driven by equity

Dr Fouché’s academic journey spans human-computer interaction, digital inclusion, and educational equity. His doctoral work used a community-based action research approach to address the digital divide in marginalised communities. “The connection between these areas is really about equity and access,” he said. “Whether it's digital inclusion in marginalised communities or language barriers in technical education, I'm interested in understanding and addressing the systemic factors that prevent people from fully participating in our increasingly digital world.”

He credits mentors such as Prof Tanya Stott and Prof Liezel Nel for shaping his research path, and values collaboration with colleagues such as Dr Wynand Nel and Dr Pakiso Khomokhoana, among others. His advice to emerging researchers? “Embrace the South African context as a strength, not a limitation. Our linguistic diversity, postcolonial educational legacy, and unique challenges aren’t obstacles to overcome, but valuable perspectives that can contribute to global knowledge.”

Dr Fouché is now planning a longitudinal study to track students over time and explore how early advantages or disadvantages related to language shape long-term academic and career outcomes. His work continues to position the UFS as a leader in evidence-based, inclusive computer science education.

Hand Read the paper: Beyond Language Barriers

News Archive

Research eradicates bacteria from avocado facility
2017-01-17

 Description: Listeria monocytogenes Tags: Listeria monocytogenes

Listeria monocytogenes as seen under an electron
microscope. The photo was taken with a transmission
electron microscope at the microscopy unit of the UFS.
Bacteriophages (lollipop-like structures) can be seen
next to the bacterial cells.
Photo: Supplied

“The aim of my project was to identify and characterise the contamination problem in an avocado-processing facility and then to find a solution,” said Dr Amy Strydom, postdoctoral fellow in the Department of Microbial Biochemical and Food Biotechnology at the University of the Free State (UFS).

Her PhD, “Control of Listeria monocytogenes in an Avocado-processing Facility”, aimed to identify and characterise the contamination problem in a facility where avocados were processed into guacamole. Dr Strydom completed her MSc in food science in 2009 at Stellenbosch University and this was the catalyst for her starting her PhD in microbiology in 2012 at the UFS. The research was conducted over a period of four years and she graduated in 2016. The research project was funded by the National Research Foundation.

The opportunity to work closely with the food industry further motivated Dr Strydom to conduct her research. The research has made a significant contribution to a food producer (avocado facility) that will sell products that are not contaminated with any pathogens. The public will then buy food that is safe for human consumption.


What is Listeria monocytogenes?

Listeria monocytogenes is a food-borne pathogenic bacterium. When a food product is contaminated with L. monocytogenes, it will not be altered in ways that are obvious to the consumer, such as taste and smell. When ingested, however, it can cause a wide range of illnesses in people with impaired immune systems. “Risk groups include newborn babies, the elderly, and people suffering from diseases that weaken their immune systems,” Dr Strydom said. The processing adjustments based on her findings resulted in decreased numbers of Listeria in the facility.

The bacteria can also survive and grow at refrigeration temperatures, making them dangerous food pathogens, organisms which can cause illnesses [in humans]. Dr Strydom worked closely with the facility and developed an in-house monitoring system by means of which the facility could test their products and the processing environment. She also evaluated bacteriophages as a biological control agent in the processing facility. Bacteriophages are viruses that can only infect specific strains of bacteria. Despite bacteriophage products specifically intended for the use of controlling L. monocytogenes being commercially available in the food industry, Dr Strydom found that only 26% of the L. monocytogenes population in the facility was destroyed by the ListexP100TM product. “I concluded that the genetic diversity of the bacteria in the facility was too high and that the bacteriophages could not be used as a control measure. However, there is much we do not understand about bacteriophages, and with a few adjustments, we might be able to use them in the food industry.”

Microbiological and molecular characterisation of L. monocytogenes

The bacteria were isolated and purified using basic microbiological culturing. Characterisation was done based on specific genes present in the bacterial genome. “I amplified these genes with polymerase chain reaction (PCR), using various primers targeting these specific genes,” Dr Strydom said. Some amplification results were analysed with a subsequent restriction digestion where the genes were cut in specific areas with enzymes to create fragments. The lengths of these fragments can be used to differentiate between strains. “I also compared the whole genomes of some of the bacterial strains.” The bacteriophages were then isolated from waste water samples at the facility using the isolated bacterial strains. “However, I was not able to isolate a bacteriophage that could infect the bacteria in the facility.

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