nt to differentiate a bee sting from an insect bite.
It is also important to recognize that the venom or toxin of s
sing? at Science (and more) to Music - 66 views
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Bee sting - 36 views
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ill actively seek out and sting when they perceive the hive to be threatened, often being alerted to this by the release of attack pheromones. Although it is widely believed that a worker honeybee can sting only once, this is a misconception: although the stinger is in fact barbed so that it lodges in the victim's skin, tearing loose from the bee's abdomen and leading to its death in minutes, this only happens if the victim is a mammal (or bird).
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nes, a process which is accelerated if the bee is fatally injured. Release of alarm pheromones near a h
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The Future of College? - The Atlantic - 29 views
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proprietary online platform developed to apply pedagogical practices that have been studied and vetted by one of the world’s foremost psychologists, a former Harvard dean named Stephen M. Kosslyn, who joined Minerva in 2012.
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Minerva class extended no refuge for the timid, nor privilege for the garrulous. Within seconds, every student had to provide an answer, and Bonabeau displayed our choices so that we could be called upon to defend them.
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subjecting us to pop quizzes, cold calls, and pedagogical tactics that during an in-the-flesh seminar would have taken precious minutes of class time to arrange.
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felt decidedly unlike a normal classroom. For one thing, it was exhausting: a continuous period of forced engagement, with no relief in the form of time when my attention could flag
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One educational psychologist, Ludy Benjamin, likens lectures to Velveeta cheese—something lots of people consume but no one considers either delicious or nourishing.)
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adically remake one of the most sclerotic sectors of the U.S. economy, one so shielded from the need for improvement that its biggest innovation in the past 30 years has been to double its costs and hire more administrators at higher salaries.
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Lectures, Kosslyn says, are cost-effective but pedagogically unsound. “A great way to teach, but a terrible way to learn.”
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Minerva boast is that it will strip the university experience down to the aspects that are shown to contribute directly to student learning. Lectures, gone. Tenure, gone. Gothic architecture, football, ivy crawling up the walls—gone, gone, gone.
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One imagines tumbleweeds rolling through abandoned quads and wrecking balls smashing through the windows of classrooms left empty by students who have plugged into new online platforms.
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Liberal-arts education is about developing the intellectual capacity of the individual, and learning to be a productive member of society. And you cannot do that without a curriculum.”
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“The freshman year [as taught at traditional schools] should not exist,” Nelson says, suggesting that MOOCs can teach the basics. “Do your freshman year at home.”) Instead, Minerva’s first-year classes are designed to inculcate what Nelson calls “habits of mind” and “foundational concepts,” which are the basis for all sound systematic thought. In a science class, for example, students should develop a deep understanding of the need for controlled experiments. In a humanities class, they need to learn the classical techniques of rhetoric and develop basic persuasive skills. The curriculum then builds from that foundation.
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“Your cash cow is the lecture, and the lecture is over,” he told a gathering of deans. “The lecture model ... will be obliterated.”
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Subsidies, Nelson says, encourage universities to enroll even students who aren’t likely to thrive, and to raise tuition, since federal money is pegged to costs.
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We have numerous sound, reproducible experiments that tell us how people learn, and what teachers can do to improve learning.” Some of the studies are ancient, by the standards of scientific research—and yet their lessons are almost wholly ignored.
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a pop quiz at the beginning of a class and (if the students are warned in advance) another one at a random moment later in the class greatly increases the durability of what is learned.
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ask a student to explain a concept she has been studying, the very act of articulating it seems to lodge it in her memory. Forcing students to guess the answer to a problem, and to discuss their answers in small groups, seems to make them understand the problem better—even if they guess wrong.
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e traditional concept of “cognitive styles”—visual versus aural learners, those who learn by doing versus those who learn by studying—is muddled and wrong.
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pedagogical best practices Kosslyn has identified have been programmed into the Minerva platform so that they are easy for professors to apply. They are not only easy, in fact, but also compulsory, and professors will be trained intensively in how to use the platform.
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he could have alerted colleagues to best practices, but they most likely would have ignored them. “The classroom time is theirs, and it is sacrosanct,
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Minerva’s model, Nelson says, will flourish in part because it will exploit free online content, rather than trying to compete with it, as traditional universities do.
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certain functions of universities have simply become less relevant as information has become more ubiquitous
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MOOCs will continue to get better, until eventually no one will pay Duke or Johns Hopkins for the possibility of a good lecture, when Coursera offers a reliably great one, with hundreds of thousands of five-star ratings, for free.
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it is designed to convey not just information, as most MOOCs seem to, but whole mental tool kits that help students become morethoughtful citizens.
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part of the process of education happens not just through good pedagogy but by having students in places where they see the scholars working and plying their trades.”
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“hydraulic metaphor” of education—the idea that the main task of education is to increase the flow of knowledge into the student—an “old fallacy.”
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I remembered what I was like as a teenager headed off to college, so ignorant of what college was and what it could be, and so reliant on the college itself to provide what I’d need in order to get a good education.
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It took deep concentration,” he said. “It’s not some lecture class where you can just click ‘record’ on your tape.”
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for all the high-minded talk of liberal education— of lighting fires and raising thoughtful citizens—is really just a credential, or an entry point to an old-boys network that gets you your first job and your first lunch with the machers at your alumni club.
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Its seminar platform will challenge professors to stop thinking they’re using technology just because they lecture with PowerPoint.
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professors and students increasingly separated geographically, mediated through technology that alters the nature of the student-teacher relationship
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The idea that college will in two decades look exactly as it does today increasingly sounds like the forlorn, fingers-crossed hope of a higher-education dinosaur that retirement comes before extinction.
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The Daring Librarian: Wikipedia is not wicked! - The Answer Sheet - The Washington Post - 70 views
www.washingtonpost.com/...gIQAYWSF8J_blog.html
wikipedia washintonpost daringlibrarian encyclopedia research
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Teaching Wikipedia in 5 Easy Steps: *Use it as background information *Use it for technology terms *Use it for current pop cultural literacy *Use it for the Keywords *Use it for the REFERENCES at the bottom of the page!
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4 ways to use Wikipedia (hint: never cite it) Teachers: Please stop prohibiting the use of Wikipedia 20 Little Known Ways to Use Wikipedia Study: Wikipedia as accurate as Encyclopedia Britannica Schiff, Stacy. “Know it all: Can Wikipedia conquer expertise?” The New Yorker, February 26, 2006 And: Yes students, there’s a world beyond Wikipedia **Several years ago, Nature magazine did a comparison of material available on Wikipedia and Brittanica and concluded that Brittanica was somewhat, but not overwhelmingly, more accurate than Wikipedia. Brittanica lodged a complaint, and here, you can see what it complained about as well as Nature’s response. Nature compared articles from both organizations on various topics and sent them to experts to review. Per article, the averages were: 2.92 mistakes per article for Britannica and 3.86 for Wikipedia. -0- Follow The Answer Sheet every day by bookmarking http://www.washingtonpost.com/blogs/answer-sheet. And for admissions advice, college news and links to campus papers, please check out our Higher Education page. Bookmark it! var entrycat = ' ' By Valerie Strauss | 05:00 AM ET, 09/07/2011 .connect_widget .connect_widget_text .connect_widget_connected_text a {display:block;} #center {overflow:visible;} /*.override-width iframe {width:274px !important;}*/ Tumblr Reddit Stumbleupon Digg Delicious LinkedIn http://platform.twitter.com/widgets/tweet_button.html#_=1315504289567&count=horizontal&counturl=http%3A%2F%2Fwww.washingtonpost.com%2Fblogs%2Fanswer-sheet%2Fpost%2F