Showing posts with label Tech. Show all posts
Showing posts with label Tech. Show all posts

Monday, January 01, 2024

Desmos – the New Standard

The online
Desmos graphing calculator is fast taking over from the venerable Ti-84 series of handheld calculators as the default calculator tool in secondary education. Desmos is now included as an integral part of the digital SAT, and acquiring intermediate-level Desmos skills is fundamental to maximizing math scores.

[Familiarity with the Ti-84 Plus CE handheld graphing calculator is still crucial to optimizing math scores on the ACT.]

I'm not aware of any succinct, comprehensive exposition of Desmos skills required for use on the dSAT (I'm working on it).

At this point, the best one can do is to peruse the various official materials linked in the "Desmos First Steps" and "Desmos Graphing Calculator" sections below. 

Check out each link, read the information provided, and do the sample exercises until you've covered all topics presented (search Google for additional help with particular topics).

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Desmos First Steps

User Guide

Quick Start Guide

Getting Started: Desmos Graphing Calculator

Getting Started: Creating Your First Graph

Getting Started Articles

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Desmos Graphing Calculator

Graphing Calculator

Graphing Calculator: Essential Skills

Graphing

FAQ: Graph

FAQ: Student Graphing

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Desmos Geometry

Geometry

Geometry Tool

Transformations

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Other Desmos Calculators

Scientific Calculator

Matrix Calculator

3-D Calculator

Tuesday, November 01, 2022

Wolfram Alpha

Stephen Wolfram and his engineers, makers of Mathematica, are at it again.

Wolfram Alpha is Stephen Wolfram's groundbreaking computational knowledge engine, one of the earliest such applications online. 

Type a question into the calculation field, and Wolfram will input the question and output the answer on-screen.: "How many goats in Japan in 1986?" Alpha knows the answer (~47,500).

Input z=x^2+y^2, and Alpha will output a 3-D graph along with detailed information about the relation.

Also of interest is Wolfram Mathematical Functions, the largest repository of mathematical functions ever to exist. 

Math fans, especially, will find Wolfram Alpha a fun site to peruse.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Thursday, September 01, 2022

Gödel, Escher, Bach

Douglas Hofstadter's mind-bending tome about self-reference and meta-thinking published in 1979 is a classic in recreational mathematics. Getting all the way through it is a tantalizing, formidable intellectual challenge.

Self-reference applies to ideas that loops inward (outward?) on themselves. 

Some examples:

This sentence is false. Seeing one's own eyeballs (without using a mirror). Brushing the bristles of a brush with that same brush.

Hofstadter compares the works of three geniuses: Kurt Godel in the domain of pure mathematics, M. C. Escher in the world of fine art, and Johann Sebastian Bach in the realm of western classical music. The similarities are, indeed, surprising and impressive.

All three masters dealt with the concept of circular self-reference, but in different ways. Godel proved the illogical nature of mathematics (which is, itself, based on logic); Escher was famous for stairs that climbed upward to the bottom of the stairs and identical tessellating foreground and background images that seem, somehow, to "cause" each other; Bach would take a short series of notes, and then invert the same motif, play it backwards, string these versions together, etc.

The book is highly intriguing, almost addictive. But it isn't for the faint-of-heart or faint-of-mind. I tried to finish it. Wasn't able to. Made me dizzy. Read it at your own risk.

Buy GEB here.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Sunday, August 01, 2021

I ❤︎ TurboScan

Scanning apps are nothing new, but when TurboScan came out more than 10 years ago, they were. TurboScan was a breakthrough, and quickly became a mission-critical app for busy professionals everywhere, and it remains so today.

I use TurboScan practically everyday, in my professional and personal lives. Making perfect color or black/white scans of important hard-copy receipts and documents (and then mailing them as pdf documents to myself or others) has become a crucial part of my workflow. In fact, I'm still discovering new features. Even without having bothered to teach myself the full range of its usefulness, Turboscan has radically changed and fundamentally improved the way I, and others I know, conduct business and teach online.

I've been thoroughly dependent on TurboScan nearly since its inception, and I'd be lost without it. I can't recommend it more highly.

You can find TurboScan in the Apple or Android App Stores. Both free and pro versions are excellent.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Saturday, August 01, 2020

The Mighty Khan

Khan Academy is the apotheosis of K-12 distance learning and one of the chief miracles of the information age.

Nowhere can one find a larger variety of excellent educational offerings, from Pre-K curricula and grade school standards to AP Art History, APUSH, Differential Equations, and Organic Chemistry.

Khan's educational offerings, available in 42 languages, are used in diverse ways in public, private, and homeschool classrooms all over the world. Total views are in the billions, and growing.

And no wonder. The courses are rigorous, well-organized, and expertly taught, and a pleasure to use. Founder Sal Kahn is a genius, a visionary, and probably the world’s best private tutor.

There’s no excuse for boredom.

Click here.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Friday, December 01, 2017

MOOCs are Coming of Age

At their inception several short years ago, MOOCs (Massive Open Online Courses) were an unproven concept with passionate advocates on opposite sides of a great debate. MOOCs were going to revolutionize higher ed, or destroy it. No one could tell which it would be.

A decade later, top MOOC providers like Coursera and EdX have grown and prospered. Top-notch course offerings by the best universities in the world have attracted millions of students world-wide. Legions of online pupils of all ages have completed courses, some earning coveted professional certificates and even fully-accredited graduate degrees online. Low cost has made high quality higher ed available to a much wider, world-wide audience.

Though forms are still evolving and the precise roles to be played by MOOCs are still uncertain, both the radically new concept and the traditional educational landscape have survived and even thrived as a result of the introduction and mainstreaming of MOOCs.

Today, MOOCs and associated certificates/degrees are legitimate educational alternatives.

See links below for further info:

Massive Open Online Course (WikiPedia)

By the Numbers: MOOCs in 2017

The Future of MOOCs

Coursera

Coursera Professional Certificates

Coursera Undergrad and Grad Degrees

EdX

EdX MicroMasters Certificates

EdX Professional Certificates

EdX Series Programs

MIT Open Courseware

Stanford Online

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Saturday, July 01, 2017

Math Fact Cards, Apps, Calculation Training Sites



Technology has transformed many aspects of modern society, and nowhere is this more evident than in the realm of teaching and learning. Nevertheless, the need to commit to memory all basic facts of arithmetic remains one of the great pedagogical constants.

It's not all down to rote memorization, however. One of the most important modern early learning goals is the attainment of "numeracy:" a visceral sense of what numbers are together with utilitarian mastery of what they do and how they do it.

After learning to count, compare, and estimate numbers, a child's next goal in the study of arithmetic is to understand addition and subtraction (joining and separating) and multiplication and division (repeated addition and repeated subtraction).

Once these definitions are demonstrably clear, addition and multiplication facts are collected through experimentation with real objects and memorialized in tables. After addition and multiplication tables are memorized, subtraction and division facts are easily learned as "reverse addition" and "reverse multiplication." Related math facts are then grouped four-at-a-time in "fact families" and recorded permanently in memory as gestalts (2+3=5, 3+2=5, 5-3=2, 5-2=3). The goal is instant recall of each and every single-digit math fact.

Thus attained, basic numeracy opens up the world of mathematics as both tool and tableau, powerful and beautiful beyond imagining.

Engaging, efficient tablet and smartphone apps have replaced the venerable flash card stack as the method of choice for learning basic math facts (though flash cards can still be used productively in assessment and to add variety).

Ultimately, kids and adults so inclined can train as mental mathletes performing astounding feats of human calculation.

Below are math fact apps and training sites I recommend:

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Flash Cards

3-Corner Addition Subtraction Fact Family Cards

3-Corner Multiplication Division Fact Family Cards

Addition Subtraction Multiplication Divison Flash Cards (with Word Problems)

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Math Fact Apps


Math Brain Booster Games (iPhone)

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Mental Calculation

Mathemagics (iOS)

Mencal (iOS)

Mental Math Quick Speed (Android)

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Training Sites

Varsity Tutors Flashcards

Math Trainer

Winhoff.net

Arithmetic Game

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Other

Mad Minute

Wikipedia: Mental Calculation

Wikipedia: Mental Abacus

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Monday, May 01, 2017

Mathematics Methodologies

The rise of pay-to-play extra-curricular educational options in recent decades has transformed the landscape of traditional education.

Private tutoring, for example, is no longer regarded as a mark of shame; in fact, it's often a source of pride ("My tutor is Joe Hotshot ... who's yours?").

In tandem with the explosive birth and rapid growth of the private tutoring industry in the U.S., a multitude of companies now offer group math tutoring in various styles and flavors. Some of these champion distinctive pedagogic approaches and programs with almost evangelical passion.

Below are some of the better-known, with notes on each:

Russian School of Mathematics
RSM posits that kids can and should be taught abstract thinking and higher-order reasoning skills (e.g. algebra) from a very early age. Results are impressive.

Singapore Math
Successful national mastery learning model emphasizing a three-step pedagogic approach (concrete, pictoral, abstract) and fewer concepts more deeply learned.

Kumon Method
Worksheet-based math and reading systems. Though currently out of fashion, the "drill and kill" mastery learning approach reintroduced by Kumon works.

Aloha (Abacus Learning of Higher Arithmetic)
Malaysian learning programs emphasizing brain development science and left-right hemispheric integration. Math programs teach mental abacus calculation.

Vedic Math
Indian system of mental calculation based on Vedic Mathematics by Swami Bharati Krishna Tirtha. YouTube instructional videos here.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Monday, August 01, 2016

Balancing Algebraic Equations



The metaphor of a pan-balance is often used to illustrate the definition of "equation:"

A declaration that two things have the same value (i.e. A = B).

It's an apt analogy, and a multitude of virtual pan-balances exist online to model solving simple algebraic equations.

The idea is that treating both sides of the pan-balance equally (i.e. doing exactly the same thing to both sides) maintains balance while allowing users to isolate unknown numbers on one side and known numbers on the other, from which the value of the unknown can be easily obtained.

It's a lot of fun to play around with balancing equations using a virtual pan-balance manipulative. In doing so, students develop an instinctive sense of how "=" works, a requisite component of intuitive "number sense" required for successful mathematical study.

After learning to balance simple equations using a virtual balance, students can progress to recording the balancing steps on paper – using algebraic notation – rather than carrying out the steps online. Eventually, they can do the steps mentally, using their working memory in place of pencil and paper.

Voila! Mastery!

Following are sites and apps I recommend for practicing balancing simple equations:

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Sites

Math Is Fun: Balance When Adding and Subtracting

Hoodah Math: Algebra – Balance Equations

Math Playground: Model Algebra

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Apps

The Fun Way to Learn Algebra: Hands-On Equations (iOS)

The Fun Way to Learn Algebra: Hands-On Equations (Android)

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Sunday, May 01, 2016

Robotics Toys, Aids, Activities

50 years ago, robots were menacing, man-like machines with starring roles in sci-fi movies and television shows.

Today, robotic machines are having a real impact on the world economy and are beginning to enter our homes and daily lives.

50 years from now, robots will likely do most of what we call "work" today.

As artificially intelligent machines begin to enter our daily lives, it's now possible for kids of all ages to design, build, program, and control their own simple robots.

Following are a few ideas to help get you started:

Sphero SPRK+

Cubelets

Raspberry Pi

Raspberry Pi on amazon

Raspberry Pi Projects and Programming

Arduino

Arduino on amazon

Arduino Projects and Programming

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Friday, February 01, 2013

Can Your Computer Read Your Mind?

The first time you visit this site and follow the instructions, you may think your computer has come to life and has found out how to read your thoughts. You might even suppose our machines are ready to take over the world (bringing to mind “Hal,” the infamous on-boight supposeard computer in Stanley Kubrick’s masterpiece film “2001: A Space Odyssey”).

Try it a few times:

http://www.albinoblacksheep.com/flash/mind

You won’t believe it. Seems impossible. Take a minute or two right now and see if this doesn’t make you scratch your head in amazement.

But have no fear ... it’s all just simple algebra!

Here’s how it works:

Any two digit number has a ten's digit called "t" and a unit's digit called "u." The value, v, of any two digit number (and therefore of the original two digit number you pick from the puzzle page) is 10t + u. The sum of the two digits, s, is: t + u. You are instructed to subtract the digit sum from the original number; let's call this result "r."

Therefore:

r = v – s = (10t + u) – (t + u) = 9t.

Since t can only be a whole number from 0 through 9, n = 9t can only be a multiple of 9 less than 90: 0, 9, 18, 27, ... 81. So, no matter which two digit number you initially select, you will end up looking up a multiple of 9 in the chart! The writer of the program on this site has been careful to place the same symbol next to each multiple of nine in each version of the chart shown to viewers, and has instructed the program to expose that symbol in the "crystal ball" when the user clicks on it.

Go back to the puzzle page. No matter how many times you open a new and totally different puzzle page, you will notice that, on each new page, all multiples of 9 less than 90 are always associated with exactly the same symbol (the other numbers will never come up, and so they are assigned random symbols).

Here's an entertaining variation of the game:

First, send someone a number/symbol chart together with a letter the game's instructions. Then, after this person tells you he's received the letter, has calculated his "magic number," and has found and focused on their "magic symbol," you mail him another letter in which you tell him which symbol you "psychically" picked up (of course, this is the symbol associated with each multiple of 9 on the rigged chart you sent).

For even more fun:

After your victim receives the initial letter from you, you might like to place a harmless bet with the victim (say, for lunch at the winner's favorite restaurant), that you will, in fact, be able to "perceive" his magic symbol through your superior psychic powers. When you successfully "intuit" his symbol, you’ll not only get a good laugh out of it, but a free lunch with a good friend as well (unless your friend is unusually adroit with numbers, he will totally miss the pattern underlying this trick).

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Saturday, September 01, 2012

Wordle Word Graphs



Once in a while a simple yet brilliant and beautiful idea comes to life online and reminds us that computer technology wasn't invented just to drain our free time, create dependence and then frustration when these vital tools fail to work, and give us another excuse to avoid personal contact with other human beings.

Wordle is one of those ideas. Take a famous speech, a letter to a friend, a junk email message, or any piece of textual information and Wordle can turn it into a thing of beauty and usefulness, marrying form and function to delight the senses and divulge hidden meanings in color, word, and shape.

Think of Wordle as a cross between painting, language, and math that enables anyone armed with a piece of text to engage creatively in all of these activities at the same time.

Wordle takes your text, analyzes which words are used and how often they appear, and creates a verbal montage that shows, based on the size of the words appearing in the wordle, the relative frequency of the particular words comprising that text. By showing graphically the popularity of words contained in a given piece of writing, Wordle reveals with striking clarity those ideas and themes given the most emphasis by the work's author. One gets the distinct feeling that wordles even somehow manages to expose the author's true intentions, giving viewers the opportunity to spy on the writer's unconscious mental processes and discover his or her latent motivations.

Above is a wordle I created out of Barack Obama's victory speech on election night, 11/4/2009.

Users can customize their creations by changing fonts, color schemes, layout, orientation, etc. to form endless variations of the same wordle. There's even a "Randomize" button to generate random versions!

Finally, you can publish your best wordles for the world to see in the Wordle Gallery.

And Wordle costs ... absolutely nothing!

Not only that, but users are completely free (with proper attribution) to use wordles they create in any way and for any personal or commercial purpose they like, under the terms of the Creative Commons Attribution 3.0 United States License that governs images created by Wordle.

Try it out yourself! Click here to go to the Wordle site, and start making your own wordles for fun, learning, or profit.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Wednesday, August 01, 2012

Tech Tools Fight Online Idea Theft

The internet has delivered the world's libraries into the palms of our hands. It's also made plagiarism as easy as copy and paste.

Stealing ideas, phrases, sentences, or even whole paragraphs or larger sections from online sources is the simplest thing in the world to do and for many students has become a tempting way out from under the stress and pressure of heavy academic workloads. Understandable as the underlying motivation may sometimes be, plagiarism, the use of another's ideas or written expressions without attribution, is a high academic crime, a form of cheating.

In recent years, however, espial software that combs the contents of academic papers for exact online matches have been developed that makes it more difficult for students to successfully take credit for the work of others.

An interesting and informative piece by Christina Stolarz in The Detroit News goes into further detail:

To combat the problem, thousands of high schools in more than 80 countries have bought memberships from a plagiarism detection service — online software called Turnitin — in the past year to check whether their students are stealing sentences, and even entire paragraphs, from the Internet.

On average, Turnitin reviews more than 10,000 student papers nationally each day, of which 30 percent contain a significant amount of plagiarism, according to company statistics. Turnitin is used in some prestigious institutions, including the United States Military Academy at West Point and Rutgers University, but it is just one in a handful of online plagiarism detection services.

To read the article in its entirely, click here.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Sunday, January 01, 2012

Can a Beautiful Hand Improve Grades?



Doctors aren't the only ones with indecipherable handwriting.

Many of us, myself included, have fallen prey to the temptation to neglect the art of penmanship in favor of barely legible scratch that most other people cannot easily read. This is easier and easier to do, of course, given how much of our writing we now do on keyboards of various types.

Using a keyboard, without the need to consciously form individual letters, we can write much, much faster, it's true. But is there a cost to ignoring the art of proper handwriting?

The administrators, teachers, and students of the Mary Erskine and Stewart's Melville Junior School in Edinburgh, Scotland would say yes, absolutely, there is a severe cost to be paid for ignoring the ancient art of penmanship.

The real cost is not in developing the embarrassing scrawl that passes so often these days as handwriting, but rather in missing out on the boosted levels of effort and intention forced by the use of the traditional fountain pen itself. Apparently, the mechanics of the implement require one to enter a higher state of focus and concentration which then transfers over to the information one is writing about, producing a habit of greater commitment and energy that directly translates into better learning of course content, as well.

At these two Scottish schools, all students and teachers are required to take special handwriting instruction, and do most of their work utilizing modern fountain pens.

It all really seems to work rather well.

Once you've gotten the feel of the classic writing implement, a task made much easier by modern improvements in fountain pens, it's something you'd never want to give up, they say.

The article is a very interesting read:

School shuns tech, teaches fountain pen

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Thursday, July 01, 2010

Google Supplants The Dictionary!

It's not much of an exaggeration to say that Google knows everything.

Nowadays, thanks to the ubiquitous presence, power, and convenience of the great Google search engine, reference books the world over are gathering dust. No longer are phone books, encyclopedias, newspapers, or maps things which all people must own.

But it seems Google has turned even the venerable dictionary, former mainstay of every self-respecting home or business library, into an unnecessary, out-dated info-relic destined for relegation to garage sales and recycling bins everywhere.

A recent Wall Street Journal article by Julia Angwin highlights the ways in which those functions most often fulfilled by dictionaries – checking spelling, finding definitions, locating sample sentences, etc. – can now be carried out more effectively and efficiently using a Google single-word search:

These days, however, Google is our database of meaning. Want to know how to spell assiduous? Type it incorrectly and Google will reply, in its kind-hearted way: "Did you mean: assiduous"? Why yes, Google, I did.

Google then spits out a bunch of links to Web definitions for assiduous. Without clicking on any of them, the two-sentence summaries below each link give me enough to get a sense of the word: "hard working," and "diligent."

Still not satisfied? Fine, click on the Google "News" tab – and you will be directed to a page of links where the word assiduous appears in news stories. Presto, sample sentences and usage examples.

"You and I can be our own lexicographers now," says Barbara Wallraff, the longtime language columnist for The Atlantic magazine. "We don't need dictionaries."

Aside from the tips given in the article, internet users can use Google as a kind of "super-thesaurus," conducting "reverse definition" word searches constructed in the following format (typed directly into a Google search field without quote marks):

"word meaning X" (where X is a short definition of the word you wish to find)

For example, here's the reverse word search I just used to come up with the word "esoteric" that I needed for the last paragraph in this post:

"word meaning information available only to a select few"

The article also sings the praises of a wonderful online dictionary that everyone should have in their bookmarks list. Wordnik provides easy access to definitions from a variety of major online dictionaries, but then goes a step farther by listing a host of sample sentences for each word studied taken from unimpeachable academic sources as well as from current newspaper usage and vernacular found on Twitter.

Dictionaries still have a place for those requiring more obscure information about particular words: etymology, history, esoteric definitions, etc. But as Angwin's WSJ piece suggests, Google has already become all the dictionary most people will ever need.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Saturday, August 01, 2009

Wikipedia Begins Flagging Revisions

Wikipedia
, the online encyclopedia anyone can write and edit, one of the top ten sites on the entire internet, the wonderfully useful if not fastidiously veracious repository of aggregate human knowledge, is becoming civilized.

There's a new sheriff in town, and his name is "Flagged Revisions."

Before the new content management system began governing changes, anyone could, in a manner of seconds, edit a Wikipedia article read by the entire world. The possibility of inaccurate or biased revisions has indeed sullied Wikipedia's reputation among academic purists. But with entries that are generally reliable and contain useful links to expand one's knowledge quest quickly and productively, Wikipedia has become the first stop for many amateur researchers and is now the "go to" site for those seeking basic information on topics and questions of general interest. (Following in Wikipedia's footsteps, even the venerable Encyclopedia Britannica has now begun experimenting with user-generated content.)

After malicious revisions to Wikipedia falsely announced the deaths of Senators Edward Kennedy and Robert Byrd, however, Wikipedia creator Jimmy Wales called for the swift introduction of Flagged Revisions to prevent such vandalism in the future.

New York Times technology writer Noam Chohen explains:

The new system, called Flagged Revisions, would mark a significant change in the anything-goes, anyone-can-edit-at-any-time ethos of Wikipedia, which in eight years of existence has become one of the top 10 sites on the Web and the de facto information source for the Internet-using public.

The idea in a nutshell is that only registered, reliable users would have the right to have their material immediately appear to the general public visiting Wikipedia. Other contributors would be able to edit articles, but their changes will be held back until one of these reliable users has signed off, or “flagged” the revisions. (Registered, reliable users would see the latest edit to an article, whether flagged or not.) 

Click here to read Cohen's entire article.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Wednesday, April 01, 2009

The Stanford Laptop Orchestra

The personal computer has transformed the world of music.

Just as iTunes transformed the commercial music industry, new hardware and software tools have fundamentally changed the way in which university music departments teach the art of musical composition and performance.

The Stanford Laptop Orchestra (SLOrK ) is a bold experiment by Stanford researcher/programmer Ge Wang that combines the flexibility of Apple MacBook laptops, multi-channel speaker arrays made out of Ikea salad bowls, creative computer programming, and visionary imagination into an intriguing mix that makes for some pretty interesting sounds.

Paul Craft writes in the Stanford Daily:

The set-up is relatively simple. Members of the SLOrk operate black Apple Macbooks, which are connected via a series of cables to a spherical speaker system and control box for volume, among other things. Depending on the piece being played, the set up can include a joystick and other accessories.

The laptops themselves are, as the group’s title suggests, the heart of Wang’s vision. Ensemble members — the “musicians” — use a variety of different programs and configurations to create a variety of different sounds, ranging from a human-like voice to percussion to the ambient noises of a casino. SLOrK relies on a coding language that Professor Wang developed while at Princeton known simply as “CHUcK.” The language is made specifically for music and sound use, prototyping an instrument in a matter of minutes. “The computer itself is not an instrument. We have to craft it into one,” Wang said.

Read the rest of Craft's article here.

An interesting posting in the Pro section of the Apple site further details SLOrk's innovative joining of laptop and audio technology.

For video articles on SLOrk, and to hear the orchestra live in concert, click here and here.

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Sunday, February 01, 2009

Tutoring Gets Outsourced

It had to happen.

With rates for in-home tutors in the U.S. averaging around $60 per hour, and video conferencing software that allows people across the globe to hold productive meetings on each other's computer screens, it was only a matter of time until enterprising companies found a way to outsource private tutoring of American students to India.

Now, for about $25 per hour (less than half price), a student in San Francisco can work with a tutor in India over the internet utilizing modern voice and conferencing software to communicate essential academic questions and concepts.

Apparently, the arrangement works quite well for many students, especially for those whose parents are unable to afford the higher cost of hiring a private tutor to work in person with their son or daughter.

Of course, nothing beats a face-to face one-on-one sit down with an expert private teacher. So much of communication is non-verbal, and many students will find internet tutoring to lack the fullness of instruction and personal quality that only live sessions with local tutors and coaches can provide. Students with learning differences or disabilities will almost certainly find that impersonal online sessions with tutors untrained and inexperienced in handling these difficult issues are inadequate to meet their specialized needs. Still others will want to be able to go into greater depth and detail than is possible through a remote, online connection with a teacher continents away.

But for simple questions, occasional sessions, or a low cost way to meet the needs of struggling students, online tutoring offers a viable alternative that may be worth considering for many families.

An excellent article recently appeared in the San Francisco Chronicle, and offers a starting point for those interested in finding out more (to go to the article, click here).

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Thursday, January 01, 2009

U.C. Berkeley For Free

Made possible by the miracle of the internet, a movement is now well underway among some of the greatest universities in the world to make their courses freely available to anyone with an internet connection – not for profit, but simply to disseminate knowledge for the betterment humankind. (See earlier post on the "OpenCourseWare Movement" titled: M.I.T. for Free.)

Today, those interested in learning informally and independently from some of the best colleges and professors on the planet can essentially audit many courses at institutions like M.I.T. and U.C. Berkeley online. Whether done in one's spare time for the pure pleasure of learning, or in a more structured way to gain greater expertise in a particular academic area, the potential for personal and professional growth is tremendous. Whether an advanced high schooler in Larkspur, California, a budding computer genius in Helsinki, Finland or a poor villager in Kuala Lampur, Malaysia, the collective knowledge of mankind is now beginning to be offered online without cost or registration, worldwide, for the benefit of all concerned.

Additionally, by taking these online peeks under the hood at the engines that power famous universities in the U.S. and abroad, one begins to get a feel for what it may be like to attend this or that college, to take a course with this or that professor, a valuable plus for anyone soon to make critical decisions about which university, major, or professors to select.

Below is a short sample of U.C. Berkeley courses that anyone can audit, for any reason, for free, online:

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Title: Introduction to Nonviolence
PACS 164A: Lecture 14

Date: Fall 2006

Instructor: Michael N. Nagler (Professor Emeritus of Classics and Comparative Literature)

I spent an hour late this morning peeking into a terrific U.C. Berkeley class given by renowned professor Michael N. Nagler, as he delivered an enthralling lecture about the successful efforts of the 1930's Pashtuns, who, lead by Abdul Ghaffar Khan in what is now Pakistan, manned the "army without guns" that nonviolently fought and finally helped defeat the British colonizers and win their people's freedom.

I learned that Ghaffar Khan, an ardent Muslim and follower of comrade and contemporary Mohatma Ghandi, was a strong believer in the absolute compatibility of Islam with the tactics and philosophy of nonviolence, a belief that carries with it critical importance and special relevance today:

"I am going to give you such a weapon that the police and the army will not be able to stand against it. It is the weapon of the Prophet, but you are not aware of it. That weapon is patience and righteousness. No power on earth can stand against it."

– Abdul Ghaffar Khan

I find it hard to describe what a thrill it was to listen to Professor Nagler, a remarkable instructor and world-class expert in this particular field, teach on the power of nonviolence as a political and cultural force ... to be able to sit in on this fascinating class.

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Title: Physics for Future Presidents (Physics C10)
Lecture 04: Gravity and Satellites II

Date: 2/2/2006

Instructor: Richard A. Muller (Professor of Physics)

From the course description:

"The most interesting and important topics in physics, stressing conceptual understanding rather than math, with applications to current events."

In this lecture, Prof Muller talks about escape velocity, and other topics germane to the space program, etc.

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Title: General Human Anatomy (Integrative Biology 131)
-- Lecture 30: The Eye

Instructor: Marian Diamond

Professor Diamond takes a look at "the cells that built the Golden Gate Bridge, that built the pyramids, that built the Palm Pilot ... the two main cells in your cerebral cortex that are responsible for all of your behavior."

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.

Friday, August 01, 2008

Chat-Speak Takes Over The World

Am I showing my age? Really, young people today ...

Like Mary Kolesnikova in her opinion piece for the L.A. Times, I regard the invasion of chat-speak into our culture as more than a bit annoying:

Sometimes it is hard to tell the difference between a person LOLing and crying – but I am definitely weeping. The cause for my earth-shattering depression is an April 25 Pew Research Center study that polled 12- to 17-year-olds on their attitudes about writing. A heart-stopping 38% said they let chat-speak – such as LOL (for "laughing out loud"), ROFL ("rolling on the floor laughing"), BRB ("be right back"), TTYL ("talk to ya later") – slip into essays and homework.

Read Kolesnikova's entire piece here.

But honestly, much of the angst I feel about this is probably just my own resistance to change.

Chat-speak is the abbreviated form of English made popular by text messaging in which, due to the inefficiency of thumb-keyboards, less is definitely more when it comes to aggregate character counts.

Here are few examples for the uninitiated:

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ASAP - As Soon As Possible
BBL - Be Back Later
BRB - Be Right Back
BTW - By The Way
CU - see you
CUL8R - see you Later
EZ - Easy
F2F - Face to Face
FAQ - Frequently Asked Questions
FWIW - For What It’s Worth
FYI - For Your Information
GG - Good Game
GTG - Got To Go
HTH - Hope That Helps
IAC - In Any Case
IIRC - If I Remember Correctly
J/K - Just Kidding
IMHO - In My Humble Opinion
IMNSHO - In My Not-So-Humble Opinion
IMO - In My Opinion
LOL - Laughing Out Loud
NBD - No Big Deal
NRN - No Reply Necessary
OMG - Oh My God
OTOH - On The Other Hand
ROFL - Rolling On the Floor Laughing
THX - Thanks
TTYL8R - Talk To You Later

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Certainly, technological adaptations mustn't be allowed to replace or ruin students' use of and mastery over standard written English. However, I have found that habitually abreviating words does in fact make text entry into hand-held devices like my Treo 650 PDA phone a whole lot faster and easier.

Times change. Technology advances. The march of progress continues.

IMHO it's really NBD.

GTG. CUL8R!

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Copyright © 2006-present: Christopher R. Borland. All rights reserved.