The Only Way is G33K

Things that interest me and are geeky! This is a place for me to share my love of all things geek, lolcat and otherwise silly :)

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"What else do we need aside from salaries to attract teachers?"

gjmueller:

world-shaker asks you to share your thoughts:

…What else do we need aside from salaries to attract teachers? Well, we need lower class size because teachers want satisfaction in their work. How do they get satisfaction? The real mission of a teacher is not to give idiot multiple-choice tests, but to get kids to think, to express themselves, to be able to advance arguments, to be able to persuade.

You get kids to do these things by getting them to write, to put their thoughts on paper. Then, the teacher has to mark the paper and spend three, four or five minutes with each student. Then she gets them to redo it and redo it. With constant coaching the student eventually begins to think, to express, to write. Without that coaching and practice, the student will never get there.

But teachers can’t do this today. With 30 kids in a class, five periods a day, 150 students, five minutes to mark each paper and five minutes to coach each student adds up to 25 hours per set of papers. There are not many teachers who will do that or, if they do, for very long…

There is no way to solve this problem given the way that schools are currently structured. Furthermore, even if we were to reduce class size from 30 to 15, it would mean that this country would need 4.4 million teachers. We would need to hire half of all the college graduates in the country just to teach school.

This was written 25 years ago.

From a speech by Albert Shanker. Quote starts on Page 7 of the Google Doc, Page 9 of the actual doc (PDF download available).

Permalink jtotheizzoe:


Can you help me out with some info on low-carb/”caveman” diets? My father is really into the idea and claims it’s really healthy, but my understanding of metabolism (and granted it’s been a while) is that the body needs carbs to break down into sugars for energy. The weight loss is therefore a side effect of essentially starving yourself… well sort of. Anyway, do you know of any studies on the long-term effects of such a diet? Is it in any way a good idea? Thanks!

From shotofindigo

This is a complicated question, and it has a long answer (and surely an incomplete one, so follow the links below for more info). TL;DR opinion = Paleo diet is a partially scientific fad with more questions/problems than benefits.
The “Paleolithic Diet” is a relatively new one in terms of fashion and fad. And it is a fad, for better or worse. Some people view it as a more natural alignment with our genetics and evolution, and some view it as a nostalgic paleofantasy, a desire to return to a supposedly more simple and environmentally-connected era. I’m troubled by it for three reasons, but also encouraged by some of its indirect effects.
If you want to distill the essence of the Paleo Diet, picture yourself as a paleolithic hunter-gatherer holding an Atkins Diet book (of course, also assuming that someone in a time machine came back and taught you to read and invented a paleo-printing press). Meats, seafood and eggs are good for protein and fats. Nuts, fruits and fungi are quality oils, carbohydrates and vitamins. Add vegetables for fiber, minerals and more micronutrients. Almost any grain or starch carbohydrate is off limits, as is dairy or sugar. Safe, but is it “better”?
Were our ancestor’s diets more adapted to human biology than our own? And will that improve the health of the modern, lumpy Homo sapiens? First we need to take a long look at the motives behind this diet, and then ask what we really know about human evolution and behavior.
One of my problems with the Paleo Diet is that is plays on Western desires of “weight loss at any cost”. Of course, the health risks of being overweight are “oh duh” obvious. With 1.6 billion+ people overweight globally, and >74% of Americans above their ideal weight, weight is clearly a problem (the obesity stats are even worse). But look at this website, and then tell me that Paleo marketing doesn’t play to the fad and fear mentality of every late night weight loss infomercial. Not a positive image.
I also have some reservations about how strong the science is. We know that our ancestors were hunter-gatherers and didn’t eat processed sugars and factory-farmed meats. But the idea that everyone foraged for a diet rich in lean meat, nuts, green veggies and no grain is a false one. Many anthropologists believe that earlier humans adapted to their local food web. Our genetics give us the ability to eat an extremely wide variety of foods, and we can even pick up new ones (as Northern Europeans did about 5,000 years ago when we began drinking milk as adults). We ate what was around us. For costal humans that meant seafood and veggies, and for inland humans it meant grains and fruits. Some Inuit peoples survived with absolutely no vegetables in their diet. We clearly have a very adaptable digestive system. 
Is there a better explanation for the way we eat (and why we crave sugars and are so good at getting fat)? I say yes. We have enormous brains, so big that they can barely fit through the birth canal and do most of their growing in childhood. Our brain is 2% of our body wight, but it consumes as much as 25% of our calories. Humans had to adapt ways to get a ton of calories into our bodies with as little effort as possible. That meant fire to cook food, tools to break it down, and harvesting grains to provide complex carbs for sugar energy. If we ate like chimps, we’d spend six hours a day chewing to feed our brains. There’s a great TED talk about the mini-brain in our gut, too. Instead of there being the One Magic Diet of Olde, we are actually adapted to getting as many calories as we can from a multitude of foods for our big brains, complex carbs being one of those (not candy bars).
The Paleo diet is also expensive. In a world of 7 billion people and growing, we should be looking for ways to reduce meat and fish intake (or at least make them more responsible), not increase them. Our poorest citizens are also our most obese, and this diet philosophy would be an unfair burden on those who can afford it the least. The Paleo diet is incompatible with a growing or poor population.
I am encouraged by one aspect of the Paleo diet. It makes people more conscious of their food intake, and puts an emphasis on natural food as opposed to processed. That’s one place where the biology is solid. And people who are more conscious of their diet are more active and healthier for a multitude of reasons. It can lead to a positive health philosophy, even if it’s not inherent in our genetic code.
The idea that our nutritional biology stopped evolving 100,000-10,000 years ago is false, and our diets are equally variable. Sure, the growth of processed, sugar-heavy foods in the past century is not compatible with the rate of human evolution. But when we look at the energy costs of having the huge brains that make us human, at least we know why so many crave the modern diet that’s sickening them. Is going Paleo the answer? I don’t think so, but there’s lots of pieces we could pick from it to apply to healthier modern Homo sapiens.
Further reading: This essay by Greg Downey is truly awesome, and breaks down Paleo diets to brain growth to cooking to primate physiology better than I ever could. Also great, Marlene Zuk in the New York Times.
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Permalink zsuki:

:DDDDDDDDDDDDDD


Hee Hee hee
Permalink gjmueller:

A Guide To Raising Your Hand In Class

Love it!
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TED-Ed

With this week’s launch of TED-Ed, the organization that’s spent the past six years providing free YouTube access to “ideas worth spreading’ is merging short lessons from excellent teachers with high-quality video production and animation in order to engage a new generation of learners.

Each TED-Ed video, which will also be hosted on YouTube, clocks in at 10 minutes or less, enabling educators to communicate a powerful idea to students in a short, easily digestible format.

(Source: GOOD, via gjmueller)

Permalink getoutoftherecat:

you’re taking “The Hitchiker’s Guide to the Galaxy” a bit too far, cat. yes, you need a towel. A towel. not a closetful.
Permalink jtotheizzoe:

Beautiful Dance Moves
I dunno, some of these seem derivative. Have we reached the limit of hyperbolic choreography?
(ᔥ In web we trust)
Permalink fuckyeahtattoos:

http://pszlosek.tumblr.com/
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