Thrun, a German-born and largely self-taught expert in robotics, is famous for leading the team that built Google’s self-driving car. He is offering his “Introduction to Artificial Intelligence” course online and free of charge. His remote students will get the same lectures as students paying $50,000 a year, the same assignments, the same exams and, if they pass, a “statement of accomplishment” (though not Stanford credit). When The Times wrote about this last month, 58,000 students had signed up for the course. After the article, enrollment leapt to 130,000, from across the globe.
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The University of Wherever - NYTimes.com - 0 views
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Thrun’s ultimate mission is a virtual university in which the best professors broadcast their lectures to tens of thousands of students. Testing, peer interaction and grading would happen online; a cadre of teaching assistants would provide some human supervision; and the price would be within reach of almost anyone. “Literally, we can probably get the same quality of education I teach in class for about 1 to 2 percent of the cost,” Thrun told me.
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Thrun believes there are technological answers to all of these questions, some of them being worked out already by other online frontiersmen.
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John Hennessy, Stanford’s president, gave the university’s blessing to Thrun’s experiment, which he calls “an initial demonstration,” but he is cautious about the grander dream of a digitized university. He can imagine a virtual campus for some specialized programs and continuing education, and thinks the power of distributed learning can be incorporated in undergraduate education — for example, supplanting the large lecture that is often filled with students paying more attention to their laptops. He endorses online teaching as a way to educate students, in the developing world or our own, who cannot hope for the full campus experience.
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As The Times’s Matt Richtel recently reported, there is remarkably little data showing that technology-centric schooling improves basic learning. It is quite possible that the infatuation with technology has diverted money from things known to work — training better teachers, giving kids more time in school.
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“When is the infrastructure of the university particularly valuable — as it is, I believe, for an undergraduate residential experience — and when is it secondary to the learning process?”
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Social Annotations in Digital Library Collections - 0 views
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While used textbooks are obviously less costly, they often carry another benefit new textbooks don't: highlights, underscores and other annotations by their previous owners. Even though the author of, and rationale for, the annotations may be unknown, the fact that somebody found particular sections of the book important enough to emphasize tends to make the eye linger. Ideally, annotations can make learning and knowledge discovery feel less like a solitary pursuit and more like a collaborative effort.
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At first glance, it would seem that the trustworthiness of an unknown individual who has interpreted or appended an author's work would be questionable, but several reasonable assumptions can be made that contribute to the perceived authority of an unknown annotator. At the very least, they read the work and took the time to make the annotations, which may question or clarify certain statements in the text, and create links to other works, authors or ideas. The subsequent reader of an annotated work then has one or more additional perspectives from which to evaluate the usefulness of the text and annotations, and more implied permission to add his or her own interpretations than in an unannotated text. Published scholarly works are objects for discussion in an ongoing conversation among a community of knowledge seekers, and whether via formal citation in later publications or annotations in existing ones, all are designed to advance the generation and exchange of ideas.
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Most critically, knowledge discovery and transfer is no longer restricted to a model of one expert creator to many consumers. In Web 2.0, consumers are creators, who can add their voices to both expert and non-expert claims. Users get the benefit of multiple perspectives and can evaluate claims in the best tradition of participative, critical inquiry.
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However, as with annotations in paper books, sometimes the value of an annotation goes beyond its content. Marshall (1998) suggests that the very act of evaluating a handwritten annotation's relevance creates a level of critical engagement that would not happen while reading a clean copy of a book. Marshall studied university students' annotations in textbooks, and found that students preferred books that had been marked by previous readers, as long as the marks were intelligible.
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Similarly, Sherman (2008) studied marginalia in English Renaissance texts and found that students of the time were routinely taught that simply reading a book was insufficient. In order to have a "fruitful interaction" (p. 4) with a text, marking it up with one's thoughts and reactions was considered essential. Marginalia and other signs of engagement and use – even such apparently content-neutral additions as food stains – Sherman sees as valuable evidence of reader reaction, and the place of the physical information object in people's lives.
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In a study of flickr.com, Ames and Naaman (2007) created a taxonomy of motivations for annotation along two dimensions: sociality and function. The latter dimension echoes people's motivation to annotate printed textbooks: the function of making important or interesting passages more easily findable for later review. The sociality dimension is a component of the Web infrastructure – making photographs findable for others, and creating shared tagsets for people with similar interests, so they might collaborate more easily. In this sense, photographs are boundary objects (Star and Griesemer 1989), around which diverse individuals can interact and communities can build (Gal, Yoo and Boland 2006). Digital collection items can also be boundary objects, even if those conversations take place asynchronously.
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