BLOEMFONTEIN – A young local scientist, Rorisang Mohau Mohlobuli, has earned international recognition after obtaining second place and a silver medal in the Mathematics category at the 1923 International Mathematics, Science and Engineering Fair (IMSEF) held in Izmir, Turkey, from 1 to 6 June.

The Gr. 9 learner of the Bloemfontein High School was among three learners selected to represent South Africa at the prestigious international competition. The delegation also included Connor Kinnes, a Gr. 11 learner of the Elkanah House High School in Cape Town; and Joshua Danilatos, a Gr. 11 learner of Graeme College in Makhanda. The delegation was led by Palesa Selepe, Eskom Expo Ekurhuleni regional science fair director.

A proud moment

Connor (17) obtained first place and a gold medal in the Engineering category and received the award for the best project in Engineering for “Project Pathfinder: Design and Optimisation of a Static Test Rocket Motor”. Joshua (18) also obtained first place and gold in the Chemistry category for his project “Catch-and-Release in a Warming Climate: Effects on Reflex Impairment and Stress in Rhabdosargus holubi”.

Rorisang’s (15) project was titled “Quantifying Goldbach: An Analysis of Prime Pairs”. His research developed a mathematical model to estimate the number of prime pairs associated with Goldbach’s Conjecture, refining existing approaches through analytical modelling and the application of correction factors to improve predictive accuracy.

Reflecting on his achievement, Rorisang said receiving recognition at an international competition was a proud moment.

“It felt amazing. A lot of hard work went into my project, so having it recognised at an international competition is something I couldn’t be prouder of,” he said.

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‘Don’t be afraid to stand out’

The young scientist highlighted the tour of the ancient city of Ephesus, believed to be the home of the Apostle John and the Virgin Mary, as one of the most memorable experiences of the trip. He also enjoyed learning about different cultures during the food exchange and cultural night.

“I had the chance to try amazing food from different parts of the world and watch cultural dances from various countries. It was insightful to learn about different cultures through dance and food.”

His advice to aspiring young scientists is to embrace their individuality and unique perspectives.

“The best thing you can do as a hopeful young scientist is to be yourself at all times. Your unique perspective, interests and ideas are what allow you to think differently and make meaningful contributions. Don’t be afraid to stand out,” he said.

‘Exceptional talent highlighted’

Parthy Chetty, executive director of the Eskom Expo for Young Scientists expressed satisfaction with the results achieved abroad.

“Rorisang, Connor and Joshua’s outstanding achievements at the IMSEF show what sustained investment in Science, Technology, Engineering, and Mathematics (Stem) education and youth development can deliver. Their success highlights the exceptional talent in South African schools and underlines the value of national platforms like the Eskom Expo, where young people can pursue scientific inquiry and present their ideas on the global stage.

“We also extend our gratitude to the dedicated Expo team and mentors who supported these learners throughout their preparation for this international competition.”

Eskom district expos are currently underway in all provinces. Learners from Gr. 4 to Gr. 12 and Technical and Vocational Education and Training (TVET) students, level 2 to 4, can register research projects at exposcience.co.za.