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06 May 2020 | Story Prof Thidziambi Phendla. | Photo Supplied
Prof Thidziambi Phendla.

Our lives as we know it will never be the same again because of the Covid-19 pandemic. The education system, among other sectors, will be subjected to changes in the provisioning of teaching and learning. 

School disruptions are a familiar phenomenon in both basic and post-school education in South Africa. In recent years, South Africa has seen waves of student boycotts, disruptions, and shutdowns of universities and TVET colleges. Most disruptions lasted for a few days, while some went on for several weeks. One case in particular is that of Vuwani in Limpopo, where more than 50 schools were either vandalised or burned to ashes; nevertheless, the school year was recovered, and learners progressed to the next level. The main difference between the usual disruptions and the current situation lies in the enormity of the shutdown, given that it is clouded at a national level by unpredictable decisions made by the National Committee. 

Shortening school holidays
If the June exams were to be scrapped, the chief challenge would be the lost opportunity to evaluate and assess the extent to which the students have achieved the academic objectives stipulated for the subjects in the curriculum. June examinations for the other grades may not have a serious impact on the learner’s progress to the next class, as other forms of assessment could still be used. However, for matric learners, scrapping the June exams may have a huge effect, since learners require quality assessed examination results to guarantee entrance into higher education institutions.

Shortening of school holidays may not have a huge impact on learners, as this system has been in operation for many years. Many of the best performing schools shorten the school holidays to assist learners in Grades 11 and 12. In many schools, learners continue with normal schooling during the June holidays and rest during the last week of the holiday.  This strategy is already being used by the best performing schools in their quest to support learners to achieve excellent matric results. Depending on the number of days lost during the national lockdown, the option of shortening the June holidays may be the most commendable.

At face value, the strategy to lengthen school days may be the most preferred, as a number of schools in the country are already implementing it at a deeper level. Increasing the number of teaching hours may, however, have an adverse impact on the learners, who may experience enormous mental exhaustion. If the day is lengthened, it is advisable to consider not more than five hours per week.  

Deliver modern and classroom-targeted technologies 
To complement the time recovery mentioned above, there would be a need for a series of changes in some, if not all, the fundamental elements of the effective provision of teaching and learning discussed below. First, change in pedagogical approaches is inevitable. Therefore, classroom teaching will not be the same again. Second, teachers will be compelled to adapt to the use of assessment data in their endeavours to drive teaching and learning. Third, teaching in the 4IR will no longer be negotiable, but will demand advanced skills to deliver modern and classroom-targeted technologies.

Fourth, it will be crucial for teachers to acquire innovative skills to manage students’ undesirable behaviour and conduct. Fifth, immense attention to curriculum mapping, integrated learning, and lesson planning will be required. Last, pastoral care responsibilities that include social and emotional support strategies will help provide the foundation to support teaching and learning. 

In conclusion, the principal elements that make teaching and learning possible and attainable, are the teachers who will be required to learn new skills and approaches to fast-track recovery of learning. If the lockdown is lifted and schools are reopened, the number of learners must be reduced dramatically from the average of 50 to a maximum of 20 learners in a classroom in order to maintain social distancing.

Prof Thidziambi Phendla is currently Manager of Work-Integrated Learning at the University of the Free State. She is the Founder and Director of the Domestic Worker Advocacy Forum (DWAF) and the Study Clinic Surrogate Supervision; and Chair of the Council of the Tshwane North TVET College (ministerial appointment).


News Archive

Research contributes to improving quality of life for cancer patients
2016-11-21

Description: Inorganic Chemistry supervisors  Tags: Inorganic Chemistry supervisors

Inorganic Chemistry supervisors in the Radiopharmacy
Laboratory during the preparation of a typical complex
mixture to see how fast it reacts. Here are, from the left,
front: Dr Marietjie Schutte-Smith, Dr Alice Brink
(both scholars from the UFS Prestige
Scholar Programme), and Dr Truidie Venter (all three
are Thuthuka-funded researchers).
Back: Prof André Roodt and Dr Johan Venter.
Photo: Supplied

Imagine that you have been diagnosed with bone cancer and only have six months to live. You are in a wheelchair because the pain in your legs is so immense that you can’t walk anymore – similar to a mechanism eating your bones from the inside.

You are lucky though, since you could be injected with a drug to control the pain so effective that you will be able to get out of the wheelchair within a day-and-a-half and be able to walk again. Real-life incidents like these provide intense job satisfaction to Prof André Roodt, Head of Inorganic Chemistry at the University of the Free State (UFS). The research, which is conducted by the Inorganic Group at the UFS, contributes greatly to the availability of pain therapy that does not involve drugs, but improves the quality of life for cancer patients.

The research conducted by the Inorganic Group under the leadership of Prof Roodt, plays a major role in the clever design of model medicines to better detect and treat cancer.

The Department of Chemistry is one of approximately 10 institutions worldwide that conducts research on chemical mechanisms to identify and control cancer. “The fact that we are able to cooperate with the Departments of Nuclear Medicine and Medical Physics at the UFS, the Animal Research Centre, and other collaborators in South Africa and abroad, but especially the methodology we utilise to conduct research (studying the chemical manner in which drugs are absorbed in cancer as well as the time involved), enhances the possibility of making a contribution to cancer research,” says Prof Roodt.

Technique to detect cancer spots on bone
According to the professor, there are various ways of detecting cancer in the body. Cancer can, inter alia, be identified by analysing blood, X-rays (external) or through an internal technique where the patient is injected with a radioactive isotope.

Prof Roodt explains: “The doctor suspects that the patient has bone cancer and injects the person with a drug consisting of an isotope (only emits X-rays and does no damage to tissue) that is connected to a phosphonate (similar to those used for osteoporosis). Once the drug is injected, the isotope (Technetium-99m) moves to the spot on the bone where the cancer is located. The gamma rays in the isotope illuminate the area and the doctor can see exactly where treatment should be applied. The Technetium-99m has the same intensity gamma rays as normal X-rays and therefore operates the same as an internal X-ray supply.” With this technique, the doctor can see where the cancer spots are within a few hours.

The same technique can be used to identify inactive parts of the brain in Alzheimer patients, as well as areas of the heart where there is no blood supply or where the heart muscle is dead.

Therapeutic irradiation of cancer
For the treatment of pain connected with cancer, the isotope Rhenium-186 is injected. Similar to the manner in which the Technetium-99m phosphonate compound is ingested into the body, the Rhenium-186 phosphonate travels to the cancer spots. Patients thus receive therapeutic irradiation – a technique known as palliative therapy, which is excellent for treating pain. A dosage of this therapy usually lasts for about two months.

The therapy is, however, patient specific. The dosages should correspond with the occurrence and size of cancer spots in the patient’s body. First, the location of the cancer will be determined by means of a technetium scan. After that, the size of the area where the cancer occurs has to be determined. The dosage for addressing total pain distribution will be calculated according to these results.

Technique to detect cancer spots on soft tissue
Another technique to detect cancer as spots on bone or in soft tissue and organs throughout the body is by utilising a different type of irradiation, a so-called PET isotope. The Fluor-18 isotope is currently used widely, and in Pretoria a machine called a cyclotron was produced by Dr Gerdus Kemp, who is a former PhD graduate from the Inorganic Research Group. The F-18 is then hidden within a glucose molecule and a patient will be injected with the drug after being tranquillised and after the metabolism has been lowered considerably. The glucose, which is the ‘food' that cancer needs to grow, will then travel directly to the cancer area and the specific area where the cancer is located will thus be traced and ‘illuminated’ by the Fluor-18, which emits its own 'X-rays'.

In the late 80s, Prof Roodt did his own postdoctoral study on this research in the US. He started collaborating with the Department of Nuclear Medicine at the UFS in the early 90s, when he initiated testing for this research.

Through their research of more than 15 years, the Inorganic Group in the Department of Chemistry has made a major contribution to cancer research. Research on mechanisms for the detection of cancer, by designing new clever chemical agents, and the chemical ways in which these agents are taken up in the body, especially contributes to the development in terms of cancer therapy and imaging, and has been used by a number of hospitals in South Africa.

The future holds great promise
Prof Roodt and his team are already working on a bilateral study between the UFS and Kenya. It involves the linking of radio isotopes, as mentioned above, to known natural products (such as rooibos tea), which possess anti-cancer qualities.

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