Prof. Greyling is Head of Department of Computing Sciences at Nelson Mandela University, Gqeberha, South Africa. He is mainly involved in teaching and research related to programming. Since 2017 he has been coordinating the Tangibl Coding project (mainly with the TANKS coding app), introducing learners to coding without the use of a computer. The project has reached around 25000 learners across South Africa, targeting disadvantaged schools without computer labs. In 2021 he coordinating online and physical CODING UNPLUGGED workshops, reaching nearly 1000 educators in South Africa.
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