OER effectiveness in higher education mathematics skills 2014-2015, ROER4D Sub-project 9 JuárezWerner Westermann 2019 This study aims to examine the effect of the use of two Open Educational Resources (OER) (a Khan Academy online tutorial and an open textbook hosted on Wikibooks) with respect to the increase of logical-mathematical outcomes of first- and second-year higher education Chilean students. It also aims to uncover teacher and student perceptions about the use of OER in order to understand how these resources are used and valued. For these purposes, quantitative and qualitative methods were used to analyse student performance data and data produced from semi-structured interviews, focus groups and a survey.<br><br>The research process was comprised of a generation of an impact analysis database (regarding student’s performance through grades in a blended-learning mode setting and grades plus attendance in a contact mode setting) followed by student focus group and teacher interviews that led to a student survey. The published dataset does not include the student survey instrument and microdata, as access to this is restricted due to ethical constraints.<br><br>Findings indicate that students in a contact-study mathematics course who used a Khan Academy online mathematics tutorial obtained better examination results than students who did not use any additional resources, or those who used the open textbook. Moreover, it was also found that teachers and students have positive perceptions about the use of Khan Academy and Wikibooks materials.<br><br>This study is Sub-project 9 of the Research on Open Educational Resources for Development (ROER4D) project, hosted by the Centre for Innovation in Learning and Teaching (CILT) at the University of Cape Town, South Africa, and Wawasan Open University, Malaysia.<br><br>The interview data is in Spanish and the impact analysis database is in English. It is considered to be of potential interest to higher education and social science researchers (with a particular focus on Latin America and Chile), as well as policy-makers and advocates of open education policy and practice.<br><div><br></div><div>This dataset was first published by DataFirst.<br></div>