My most useful web tool

I've a new blog post on the OSC IB Blogs site about using "My most useful web tool" - RSS.  

Click through to the site, check out my post, and explore the other blogs there, too.

Codeacademy (Review)

One of the Middle School students at ISOCS sent me this review of Codeacademy  using Pages for iCloud sharing:

Screen shot http://www.codecademy.com/learn

Codeacademy is a website part of Khan Academy,  where you can program things by code. it also has another subject, which is math. When you have completed  a specific task, you get a badge, these are transferred into energy points.  The more energy points you get, the better you will be at everything.  
Pros and cons:
  • is organised
  • has great format
  • is helpful
  • and fun

Cons: NONE!!!! 

So to sum it up, try Codeacademy, and see if you like it.  by G.

Digital Native? Immigrant? Visitor? Resident?

Another PBS Idea Channel video to share:

Published on Dec 11, 2013
Is there such a thing as a "DIGITAL NATIVE"? Some experts have suggested a clear divide between "digital native" (the Millennial tech experts) and "digital immigrant" (older generations introduced to technology later in life). The young NATIVES have had technology change the way they think and the way their brain works, while older folk are stuck playing catch-up. But is that fair? Can someone innately understand technology? Is it even a good idea to define people as natives vs immigrants? Watch the episode and find out!

Read Marc Prensky's articles and essays if you're interested.

cc licensed ( BY NC SA ) flickr photo shared by OllieBray

If you'd like to think further, watch this video:


Do you think that the video below, from Dave White,  might be a better description of the spectrum of technology users? 

Published on May 31, 2013
Understanding how individuals engage with the web. 
Embedded in this blog post: http://tallblog.conted.ox.ac.uk/index... 

At the end of the video, Mr. White says 

"So, that’s the Visitor-Resident Principle. And I think what I’d say, overall, about it, is that it’s not about academic or technical skills; it’s about culture and motivation. And, to me, that is a much healthier emphasis than maybe we’ve seen over previous years, where we’re not focusing primarily on the technology, but we’re looking at how people approach the technology; and, as I say, not in a skills basis and not in an age basis, either, but in terms of their motivation. And I’d ask whether we’re moving into a kind of a post-digital, post-technical space, because the technology itself is working quite well and there’s an awful lot of it; and most of the really substantive challenges that we face, appear to be socio-cultural rather than, particularly, technological.

"And this brings into question what things like digital literacy and digital skills might actually mean. Obviously, at one level, you do need to know how to just literally engage with the technology and which buttons to press; but perhaps that shouldn’t be our primary focus in terms of the way people engage with online spaces or online tools, depending on whether you’re a visitor or a resident." (source)

Deleting files isn't as simple as it sounds

Two very interesting videos from the BBC you should see, if you're thinking of changing computers.  What will you do with your old one?

Published on Nov 22, 2013
Dallas Campbell finds out why deleting files isn't as simple as it sounds. Jem lends a hand in destroying some hard ware as the boys test what can be retrieved from some seriously damaged hard drives.
(Having trouble seeing this video?  Click here to go to YouTube.)

Published on Nov 29, 2013
The Data Recovery Masters set to work on recovering the data on the hard drives that Dallas got medieval with.
(Having trouble seeing this video?  Click here to go to YouTube.)

Sieve of Eratosthenes

The Sieve of Eratosthenes is an method for efficiently finding all prime numbers up to a number, 120 in this case, by eliminating (colouring in) all multiples of successive primes. It uses the common optimisation of starting at p2 for each prime p, as all non-primes (composites) up to p2 were found in previous passes. Because of this it needs only consider primes up to 7, because the square of the next prime 11 is 121, larger than any number here.

A Tweet from @davidwees this morning brought this image to my attention.  I found its source on this Wikipedia page. The Sieve of Eratosthenes is a simple algorithm that finds the prime numbers up to a given integer. (If you need to brush up on prime numbers, see this definition of prime number.)

"Eratosthenes (276-194 B.C.) was the third librarian of the famous library in Alexandria and an outstanding scholar all around. He is remembered by his measurement of the circumference of the Earth, estimates of the distances to the sun and the moon, and, in mathematics, for the invention of an algorithm for collecting prime numbers. The algorithm is known as the Sieve of Eratosthenes." (Source)