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Christopher started work as a secondary school mathematics teacher in 1983. He has taught in a variety of mixed urban comprehensive schools leading up to a seven-year stint as head of department in South East London. He managed the PGCE course at Goldsmiths for two years, and was director of the PGCE Mathematics programme at King's College London for twelve years until 2016.

Christopher worked in Uganda and Tanzania for four years, teaching school students and working on in-service and pre-service teacher training. He is the co-author of a series of textbooks for secondary schools in Uganda.

Christopher has managed a variety of curriculum development and educational support projects, including Ocean Maths and Number Partners and ran London maths events for maths year 2000. He currently runs the Association of Teachers of Mathematics London branch. 


  • Middle management in secondary school mathematics.
  • Dynamic ICT supporting teaching and learning in mathematics.
  • Mathematics, Narrative and Orientation, engaging learners in school mathematics. 

He is a member of the School's Centre for Research in Education in Science, Technology, Engineering & Mathematics, with a specialism in mathematics education.


C, Olley and Karugaba, J.,  School Mathematics for Ugandan Secondary Schools  Fountain Publishers, Kampala 1993-1999.