Be brave, go ahead and divide by zero

October 30th, 2009

This post was written by Ethan Hein.

When you learned division in school, the teacher probably brushed off the issue of dividing by zero in one sentence: you can’t do it, moving on. You might feel like you got shortchanged by that explanation. Why not? What happens when you divide by zero?

You can’t ask the computer. Computers fail when you ask them questions with no unambiguous answer. Dividing by zero is just such a question. Folklore suggests that asking the computer to divide by zero makes it spectacularly explode or something. In reality, it returns an error message or the reply Not A Number, or it gives a wrong answer, or the program terminates, or sometimes the machine falls into an infinite loop.

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Knewton's expanding Twitter presence

October 27th, 2009

In addition to Knewton’s main Twitter account, you can now connect with team members individually. Click an image to follow that person’s Twitter.

Lead Verbal Developer for Graduate Programs Alex Sarlin:

Associate Product Manager Sara Petry:

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IESE MBA Forum starts today

October 26th, 2009

A quick note to say that IESE, the Spanish business school recently ranked #1 in the world by the Economist, is starting its high-profile MBA Career forum today. Why is IESE so special? The Economist cited graduates’ high salaries and employment rates, and the wide variety of job categories in which IESE graduates have made an impact, as the main reasons behind the rankings. Here’s a video that explains further.

Attitude problems

October 26th, 2009

Emily Holleman is a Content Developer at Knewton, helping students with their LSAT preparation.

If you read my friend Chris Black’s great post on passage wording last week, you already know how important language is on the LSAT. However, it’s especially important to pay attention to language use when you’re asked about an author’s attitude.

Attitude questions—you know, those pesky ones that pretty much ask you how the author feels about something—may be the trickiest questions on the Reading Comp section. If only those authors would just come out and say how they felt about the topic (I think that Yeats’ poetry is crap)! Luckily for us, these attitudes do come across loud and clear, as long as you know what types of language to look for.

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Should all teachers post their syllabi and curricula online?

October 22nd, 2009

Timothy Burke says in his blog post, “Putting Syllabi Online:”

Since I often put up both drafts of syllabi and completed syllabi for comments, I obviously think it’s a good practice. It’s been nothing but beneficial for me: I’ve gotten great suggestions, interesting critiques, a good feeling for how the syllabus plays with different intellectual communities. So why wouldn’t everyone do this? In fact, why shouldn’t everyone more or less be officially pushed to do it by colleagues or administrations. It’s not just a good thing for the person posting the syllabus, but for students who want an early view of what a course might entail and for larger publics who would like to get a sense of how much work and thought goes into an average course design. Since one of the handicaps academics have in the public sphere at the moment is that there are a number of people who think the work of college teaching consists of walking into a room, letting knowledge spill out of your head, and leaving, it might help if we gave a demonstration of what’s actually involved.

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The September 2009 LSAT: Not All Tests Are Created Equal

October 19th, 2009

If you recently took the September 2009 LSAT, you may be wondering whether your test was any harder or easier than previous LSATs. Though it’s true that the LSAT varies slightly in difficulty from administration to administration, this variation will not affect your final score. Consider Jonas, a fictional law school hopeful who took the LSAT twice: once in June, 2008 and again in June, 2009. In June, 2008 Jonas correctly answered 86 out of the 101 scored questions on the test. When LSAC converted his raw score of 86 to the 120-180 point scale, he received a 165. In June, 2009 Jonas correctly answered only 83 of the 101 scored questions on the LSAT. His scaled score, however, remained the same — a 165. Because Jonas was able to earn the same scaled score by correctly answering fewer questions on the June 2009 test than the June 2008 test, we can say that the June 2009 test was “harder” by a margin of about 2-3%.

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Processing

October 16th, 2009

Processing is an open source programming language and environment for people who want to code their own animation, interactions and data visualization. It shows tons of potential for fun, interactive educational and gaming applications. Check out the project gallery to see some examples, ranging from the silly to the sublime. Project initiators Ben Fry and Casey Reas say they made it “to teach fundamentals of computer programming within a visual context and to serve as a software sketchbook and professional production tool. Processing is an alternative to proprietary software tools in the same domain.”

Anthony Mattox has made some particularly compelling artworks with Processing:

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Business School Celebs

October 15th, 2009

Why should anyone go to business school? Bill Gates never went, and neither did Steve Jobs. But you know who did? All these people. They used business school to develop the tools they needed for real-world success. If you’re serious about business, maybe you should go too…

Starring Chris Black
Produced by Ian Parker

Train Your Body for the GMAT

October 13th, 2009

When you’re preparing for the GMAT, you naturally want to take practice tests and study diligently. But peak performance doesn’t just depend on your knowledge and skills. It depends on your entire state of being: your digestive system, your muscles, your emotions. If all of your bodily systems are taken care of, you’ll be ready for peak functioning on test day.

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