1. 3D Sym Op [Mobile Application], (2016), retrieved 7 August 2017, from https://itunes.apple.com/sg/app/3d-sym-op/id1067556681?mt=8 Apple App Store and https://play.google.com/store/apps/details?id=com.nus.symmo&hl=en Google Play Store
2. Ardac D. and Akaygun S., (2004), Effectiveness of Multimedia-Based Instruction that Emphasizes Molecular Representations on Students' Understanding of Chemical Change, J. Res. Sci. Teach. , 41 (4), 317–337, DOI: 10.1002/tea.20005
3. ARMolVis [Mobile Application], (2016), retrieved 7 August 2017, from https://itunes.apple.com/sg/app/armolvis/id1095181960?mt=8 Apple App Store and https://play.google.com/store/apps/details?id=nus.cc.mobile.armolvis&hl=en Google Play Store
4. Barringer M-D., Pohlman C. and Robinson M., (2010), Schools for All Kinds of Minds: Boosting Student Success by Embracing Learning Variation , 1st edn, San Francisco: Jossey-Bass
5. Center for Education Reform, (2011), Digital Learning Now! – Roadmap To Reform , retrieved 7 August 2017, from http://digitallearningnow.com/site/uploads/2014/03/Roadmap-for-Reform.pdf