This article examines the effect of two Open Educational Resources (OER) Khan Academy Collection and a teacher-authored open textbook on mathematical course performance and attendance amongst first-year higher education Chilean students. It also aims to find out about teachers’ and students’ views on the use of OER in order to understand how these resources are used and valued. To this end, quantitative and qualitative methods were employed. Findings indicate that students in face-to-face classes who used Khan Academy resources obtained better examination grades than students who used the open textbook or relied on traditional proprietary textbooks. Moreover, it was also found that students who used both types of OER had significantly lower attendance levels than students who relied on traditional proprietary textbooks. Finally, it was observed that teachers and students had very positive opinions on the use of both the Khan Academy Collection and open textbook resources.

中文翻译：

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OER运用对高一学生数学课程成绩的影响

本文研究了两个开放式教育资源（OER）可汗学院收藏和一本由教师撰写的开放式教科书对智利高等教育一年级学生的数学课程表现和出勤率的影响。它还旨在了解教师和学生对OER使用的看法，以了解如何使用和重视这些资源。为此，采用了定量和定性方法。研究结果表明，使用可汗学院资源的面对面班学生比使用开放式课本或依赖传统专有课本的学生获得更高的考试成绩。此外，还发现与使用传统专有教科书的学生相比，同时使用两种OER的学生的出勤水平要低得多。最后，