Archive for February, 2011

Trying to understand US education

Sunday, February 13th, 2011

I’m overly critical sometimes, and it’s easy for me to think I have all the answers. So this is an information gathering blog post while I wait for something to finish on my computer. In short, I’m trying to figure out the difference in approach between US Middle and High School vs. my experience with British secondary education.

When I went to secondary school (age 11 – think combination of middle and high school), we had fixed class schedules for the first 3 years. In my case, it was required to study the following individual subjects from age 11 to age 14 (mostly determined by the National Curriculum):

  • Art
  • Biology
  • Chemistry
  • Civic Studies
  • Design Technology
  • English
  • French (later German)
  • Games (outdoor PE)
  • Geography
  • History
  • IT
  • Math(s)
  • Music
  • Personal Social Education (PSE – sex education, etc.)
  • Physical Education (PE)
  • Physics
  • Religious Studies

Now, I was at a private school, and some of these topics differ if you’re not, but not many (Latin was dropped the year I started…sadly). Most of these are mandated at various “Key Stages” of the UK National Curriculum as required, even if only for a year or so. In some schools, for example, they combine sciences, but you still have to study science from age 11 onwards. Classes were divided into 40 minute “periods”, with a bell in between, and 5 minutes to get to the next class. There were no “hall monitors”, you just asked if you wanted to go to the bathroom and they trusted you. Also, we all wore uniforms (complete with Blazer and Harry Potter style ties with different School Houses), and (private school bit) were required to stand when a teacher or adult entered the room, as a sign of respect. There were no metal detectors, and the most violent thing I recall ever happening was someone stealing some Potassium from the Chemistry lab.

US secondary education is highly regional in nature, and there are very few national standards (No Child Left Behind, etc. don’t actually attempt to set a national curriculum), so what you learn in one state will vary wildly from another, even down to how the Civil War is described (and thus cannot be agreed upon) in history class. It is my understanding that high school here is a lot more like what would be called “college” in the UK (which is not a University, but is instead an alternative system available to 16 year-olds), and middle school is a half-way point. As I understand it, it’s not required to study science, history, or geography beyond a very elementary level. Classes seem to be longer in duration but focused on fewer topics of study, with a lot more choice.

I made no pretence that I disfavor the notion of allowing children to opt out of classes they don’t like. For example, I suck at German…seriously. I just can’t handle the different genders. I would get everything right, except I would be unable to get the right one of the three possibilities. But I’m glad that I was required to study German. I’m also glad that I didn’t have a choice about studying a foreign language, or art, or other topics I might have chosen to avoid if I had had a choice in the matter (I consistently got over 100% in Religious Studies due to a bonus points system, but I might have opted out – I even once managed to get everyone out of an 80 minute test by keeping the teacher side-tracked in a discussion/debate on cryopreservation as applied to the second coming of Christ). After the age of 14, it was possible to drop certain subjects, but not all. For example, German got dropped :) but a foreign language was required, as was art, both subjects I might have chosen not to pursue with a choice in the matter.

Anyway. If you have links/stories about how secondary education works differently in the US, I would actually be interested. I can hopefully convince myself with enough actual data that not all schools here are just maximum security facilities with metal detectors, cops, etc. and other notions I may have.


Pipe dream: USB support for empeg

Thursday, February 3rd, 2011

So I was daydreaming about USB support for the empeg again. I think I now (in my old age) understand enough to actually implement/achieve this (before it was a youthful pipe dream), but it won’t be simple and I don’t have any time for it soon – heck it’s been ten years or more since people first asked about this, what’s another year or two? Anyway, here is the basic concept, since it also applies to other systems without USB support.

The empeg has one IDE (ok then, ATA) channel and a controller that supports two devices, though typically only one disk is actually used (who needs more than one disk these days, with flash and huge sizes?). It ought to be possible (in theory) to use a SATA disk with the aid of an IDE->SATA adapter (these do exist) and a power rail, which prolongs life by a few years. More to the point, it is technically possible to expose an IDE-like device that essentially just passes through the 16-bit data bus to general purpose GPIO lines (after enough logic to fool the controller into thinking it’s a “disk”, and some hefty driver modification). With that done, and using PIO to drive data to/from an attached USB1.1 chipset, it would be possible to provide minimal support for USB at (perhaps) a few MB/second. Other peripherals could similarly be added, if a more complex protocol were built and driver support added.

It has been my intention for some time to learn enough about the ATA spec to implement a very basic disk-like device, using an old PC motherboard with a common IDE chip/driver as a test of the concept. I now think this might actually be doable in my lifetime, so a pet project this year is going to be to hack something up along those lines to give me GPIO lines from an “IDE” “disk” sufficient to light up some LEDs, etc. If I get that working, then I will solicit for input on the more audacious goal of driving a cheap USB chipset from it.