Brantina Chirinda is a research associate at the Department of Science and Technology Education, University of Johannesburg (UJ) and a visiting research fellow at the University of California, Berkeley. Dr Chirinda holds a PhD in Mathematics Education from the University of Witwatersrand. Lwazi Sibanda holds a Doctor of Philosophy in Education and is an Associate Professor in the Department of Science, Mathematics, and Technology Education, in the Faculty of Science and Technology Education at the National University of Science and Technology (NUST) in Zimbabwe. She is currently the Executive Dean in the Faculty of Science and Technology Education. Joseph Vere holds a BSc General (London) degree in Mathematics and Physics, as well as MA, EdM, and EdD degrees in Mathematics Education from Columbia University. He is recently retired after having worked in six different capacities in the education sector over a fifty-year period. Gladys Sunzuma, PhD, is a lecturer in the Science and Mathematics Education Department at Bindura University of Science Education. Gladys has served for seven years as a high school mathematics, physical science, integrated science, and chemistry teacher in Zimbabwe, three years as a teaching assistant in the Education Department at Bindura University of Science Education, and eleven years in the current position as a lecturer at Bindura University of Science Education.