Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=tmes20 International Journal of Mathematical Education in Science and Technology ISSN: 0020-739X (Print) 1464-5211 (Online) Journal homepage: http://www.tandfonline.com/loi/tmes20 App-based scaffolds for writing two-column proofs Debbie Marie B. Verzosa, Ma. Louise Antonette N. De Las Peñas, Maria Alva Q. Aberin & Len Patrick Dominic M. Garces To cite this article: Debbie Marie B. Verzosa, Ma. Louise Antonette N. De Las Peñas, Maria Alva Q. Aberin & Len Patrick Dominic M. Garces (2018): App-based scaffolds for writing two- column proofs, International Journal of Mathematical Education in Science and Technology, DOI: 10.1080/0020739X.2018.1500654 To link to this article: https://doi.org/10.1080/0020739X.2018.1500654 Published online: 23 Jul 2018. Submit your article to this journal View Crossmark data