Swee Fong Ng, the Book Editor is an Associate Professor, Mathematics and Mathematics Education Academic Group at National Institute of Education, Nanyang Technological University.

• 1 How Researchers and Teachers Could Use Videos: The Role of Grounded Images.- 2 How Videos And Audio Technology Support The Professional Development Of Teachers.- 3 Developing Teacher Competencies Through Videos For Facilitation Of Mathematical Modelling In Singapore Primary Schools.- 4 Developing Critical Reflection Through Audio And Video Technology For Some Singapore Primary School Mathematics Teachers.- 5 How A Singapore Teacher Used Videos To Help Improve Her Teaching Of The Part-Whole Concept Of Numbers And The Model Method.- 6 Learning For Mathematical Problem Solving Instruction In The Philippines: The Case Of Teaching Extensions.- 7 Video As A Medium For Introducing Lesson Study To Multi-Ethnic Malaysian Mathematics Teachers.- 8 Summary Of Part I And Introduction To Part II.- 9 What Is Important In A Lesson On Factorization? The Reflection Of An Experienced Teacher In Hong Kong.- 10 The Impact of Online Video Suite on the Singapore Pre-service Teachers’ Buying-in to Innovative Teaching of Factorisation via Algecards.- 11 Reflections of a Korean Middle School Mathematics Teacher on Improving the Teaching of Mathematics.- 12 The Use Of Videos And Classroom Artefacts In Professional Development Of Teachers And Teacher Educators In Indonesia.- 13 Summary Of Findings Of Chapters In Part II And Introduction To Part III.- 14 The Use of Video and Audio Technology in Pre-service Teacher Education and In-service Teacher Professional Development.- 15 Going Forward: Encouraging Teachers to Embrace Video Technology for Self-Development.- List of Contributor.