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Copyright of Revista Iberoamericana de Educación (Version impresa) is the property of Organizacion de Estados Iberoamericanos (OEI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

One of the problems that the Colombian higher education system is facing is the problem of student desertion, shwoing that a great amount of students leave their university studies during the first semesters. For this reason, the National Education Ministry and Universidad de la Amazonia implement a new strategy to foster student retention and graduation through academic levelling. This paper shows eight learning virtual objects from different learning áreas, applying technological tolos to design didactic interactive and creative environments. [ABSTRACT FROM AUTHOR]

Throughout this article, it is intended to share a particular experience of positional accuracy evaluation, explaining its bases, design, performance and result's processing, with the aim to contribute ideas to the important and complex issue related with quality assurance of the geographic products. It is explained, too, that quality evaluation contributes to put into practice the fitness for use quality notion, which is, nowadays, relevant in the international scene. [ABSTRACT FROM AUTHOR]