Professor Chang works in sustainability, geography, and environmental education. His expertise is in Climate Change misconception diagnostics and in improvement to geography curriculum and technology-enabled refutation-oriented instruction. He has published widely in the areas of geography, geographical education and environmental education. He is the most cited author in the top geography education journal, International Research in Geographical and Environmental Education up till the year 2022.

He is currently the NIE Sustainability Officer as well as the Dean, Academic and Strategic Development at National Institute of Education, Nanyang Technological University, Singapore. He was also an elected Senator serving as the Chairperson to the Senate Committee on Education (2020 – 2022) and Co-Chair to the Senate Steering Committee (2021 – 2022). He is also an Adjunct Professor of East China Normal University, Shanghai, China and he was a visiting scholar to the University College London, Institute of Education in 2015.

Professor Chang is the President of the Southeast Asian Geography Association, in addition to being the Co-Chair of the International Geographical Union Commission on Geographical Education. Professor Chang also serves on the Advisory Board of the University College London Centre for Climate Change and Sustainability Education.  He is the Co-Editor of the journal International Research in Geographical and Environmental Education (IRGEE) and is the International Editor of the journal Review in Geographic Education online (RIGEO) for the Asia and Oceania region. Professor Chang also serves as a member of the editorial board of the journal Humanities and Social Studies Education online and is a member of the scientific committee of the journal J-Reading - Journal of Research and Didactics in Geography.