The use of dynamic mathematics software is said to enhance pupils’ understanding of mathematics. However, the challenge could be that teachers first need to become knowledgeable about using the computer teaching and learning environment for this positive effect on pupils’ learning to happen. The question that arises is the following: What is required for teachers to start using dynamics mathematics software effectively in their lessons? An immediate answer could be that teachers have to develop Technological Knowledge and blend it with the Pedagogical Content Knowledge that they already have.
The aim of my research was to train Zambian mathematics teachers in using GeoGebra and explore how they started to develop Technological Pedagogical Content Knowledge (TPCK). Ten inservice mathematics teachers at Mkushi High School participated in my research study. I explored their development of TPCK through the training course, in which they also developed lesson materials for use in real lessons. I investigated how teachers thoughts about teaching mathematics
with ICT changed during the training.