“…Specifically, to assess the accessibility of OER, three different methods were used, as shown in Using manual evaluation method Questionnaires Avila Caruso & Ferlino, 2009;Mulwa et al, 2016;Navarrete & Luján-Mora, 2015a;Navarrete et al, 2019;Navarrete & Luján-Mora, 2018;Sanchez-Gordon & Luján-Mora, 2016 No assessment N/A Coughlan et al, 2016;Hejer et al, 2017;Iniesto and Rodrigo, 2018;Iniesto & Rodrigo, 2016;Iniesto et al, 2017;Iniesto et al, 2019;Kourbetis & Boukouras, 2014;Kourbetis et al, 2016;Morales and Benedi, 2017;Moreno et al, 2018;Navarrete et al, 2016;Politis et al, 2014;Sanchez-Gordon & Luján-Mora, 2015;Yalcinalp & Emiroglu, 2012;Zervas et al, 2014 aDesigner, used by Iniesto and Rodrigo (2014) and , aimed to simulate the use by people with visual disabilities in order to help the designer assess the extent to which a given content is accessible to users with that particular disability. Finally, manual assessment is mostly based on users' questionnaires (Avila Caruso & Ferlino, 2009;Mulwa et al, 2016;Navarrete et al, 2019;Navarrete & Luján-Mora, 2015a;Navarrete & Luján-Mora, 2018;Sanchez-Gordon & Luján-Mora, 2016). In these cases, the purpose of the questionnaire is to obtain a qualitative analysis to appreciate the users' experience of the process of using a given OER (Navarrete et al, 2019), based on questions like 'Is it easy to learn how to use the website?'…”