"In the world ye shall have tribulation: but be of good cheer; I have overcome the world." –John 16:33

San Pedro Garza Garcia

Tag: Khan Academy

Are our kids smart? Are yours?

We have tried to avoid making claims about the intelligence of our children. Partly that is because it is so grating to hear parents and grandparents state that their children and grandchildren are super-intelligent based on how soon they learned to say the alphabet, read, or memorize poetry. Mostly, though, it is because our kids had to work very hard at their learning. Some concepts that might have come easily to a gifted few required extended hard work from them. These periods of extended hard work came every semester and it is no different now that they are in graduate school.  Measures of intelligence are fairly controversial and seem to pit people against each other much more than any benefit derived from insights about why their intelligence is what it is.

That is why I was very grateful to read what I believe to be a brilliant and true blog post by Salman Khan of the famous Khan Academy. His belief, backed by a growing body of research, is that a mindset that embraces rather than avoids the struggle and failure required to fight through hard material is more conducive to learning than just about anything else. I highly recommend you read the whole thing. This is a belief I have long held–it is hard, but worth it to learn hard stuff. A corollary to all this is that intelligence is not fixed. He has (of course!) a great little video that goes with the article to illustrate his point. Here is a quote from the article to whet your appetite. Please read the whole thing.

[Dr. Carol Dweck] has found that most people adhere to one of two mindsets: fixed or growth. Fixed mindsets mistakenly believe that people are either smart or not, that intelligence is fixed by genes. People with growth mindsets correctly believe that capability and intelligence can be grown through effort, struggle and failure. Dweck found that those with a fixed mindset tended to focus their effort on tasks where they had a high likelihood of success and avoided tasks where they may have had to struggle, which limited their learning. People with a growth mindset, however, embraced challenges, and understood that tenacity and effort could change their learning outcomes. As you can imagine, this correlated with the latter group more actively pushing themselves and growing intellectually.

The good news is that mindsets can be taught; they’re malleable.

Betty Blonde #156 – 02/19/2009
Betty Blonde #156
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An online education – Udacity and the Saylor Foundation

Day 319 of 1000

Update:  See clarification from Saylor Foundation here on how they provide certification of course completion.

I just read an article about a company named Udacity that provides free, college level education on line.  It does not have a lot of content yet, but, if I get the concept, it sounds better than some other on line educational systems.  The idea is this:

  • Anyone can take any class they want any time they want for free.
  • After the course is completed, the student can go to a walk-in Udacity testing center to take a test to show they actual get the material and it was not someone else who took the course for them.

If you are into education solely for the sake of learning stuff, then their are probably better sites around.  Andrew pointed us to the Saylor Foundation website.  It has full blown college classes by great universities, but no way for a student to unequivocally demonstrate they took the course and understand the material.  If the Saylor Foundation added some say to do that, they would be way ahead of Udacity and have a way to make more money.  They same is true for Khan Academy.  Stanford and MIT also have classes on line.  It seems like they would benefit greatly by following this model, too.

I think this is the future.  The whole issue with on line education is that it is difficult to prove you were the one who actually took the class.I think these are tremendous ideas to which there will be additonal innovation both in terms of content delivery and confirmation that the student has actually learned the material and been certified in a manner that is appreciated by industry and even academia.

Thursday in Roanoke while Lorena fights Microeconomics battles

Day 157 of 1000

I am scheduled to put over 1000 miles on the pick-up this week.  This morning, I am writing from a McDonalds about a half an hour out of Roanoke, Virginia.  My understanding is that I will maintain this fairly crazy travel schedule through the end of March.  I have a trip to British Columbia the first week of April, then, hopefully, I will only need to make a couple of road trips per month.  I get a little bit fried from sitting in the pickup for so long with only restaurant food and very little exercise, but going out to meet customers, look at their machine vision applications, and try to find solutions is absolutely invigorating.  I am working on a bleeding edge technology to solve a new class of problems that have been waiting for a solution for a long time.

The solution involves the use of a regular machine vision camera (imagine an industrial, high quality webcam) which captures 2D images to create 3D images with the help of a line laser.  The technology has been around for a long time, but now a company has packaged it in a way that makes its use in generic applications very, very much easier than was ever possible before.  My company has given me license to develop a product around the new technology and I am enjoying it immensely.

In some much more interesting news, Lorena’s Microeconomics professor asked the whole class to prepare to draw some graphs that describe Microeconomics concepts on the whiteboard in front of the class.  He did a really bad job of describing the concepts so no one in the class was prepared to draw the graphs except Lorena.  Lorena was prepared because, when she could not figure out what to do, Christian showed her the Khan Academy Microeconomics videos.  She was the most prepared of the class, so the professor picked her first, then (according to Lorena) he with ridicule through two of the examples.  I was getting pretty exercised about the whole deal until she told me he was not really mean, just demanding and he did it to the whole class.

I am really sad that Lorena cannot draw like Kelly because it would be great to have a drawing of him for this blog post.  Lorena, if you read this, next time you are in class, take a surreptitious photo of your professors with your cell phone so Kelly can draw them for her (and my) blog posts.  Lorena describes the guy as a fat, bald guy with long hair who looks like he might be very comfortable on a Harley Davidson.  I like the guy already and wonder if he has any tattoos.

That Khan Academy thing reminded me I want to ask Kelly how many Linear Algebra videos she watched today.

Computer travails: Why we are not rich

Day 89 of 1000

When it rains it pours.  Between Kelly and Christian, there are five research papers that need to be written between now and November 30.  That means most of Thanksgiving break will be spent at the computer typing.  In addition to that, there is math and physics quiz, test, and lab preparation.  Now, when I was in college (I cannot believe I said that), we did all of our studying out of books.  The kids still have their books, but they rarely even use their math or physics books as reference.  They do their homework at online services like WebAssign.  If they get stuck, they visit places like PatrickJMT and Khan Academy for tutoring and examples (they like PatrickJMT best).

So, earlier this week, Christian tells me his computer power cable is broken.  Again.  He plans to order a very nice computer between now and the end of the year and asks if he should just wait until then.  I say NO, NO, NO!!!  We are in the middle of the hardest part of a very hard semester and we cannot survive without one computer per person–Christian, Kelly, and Lorena for school and me for work.  In the meantime, Kelly’s cheapo Dell computer starts manifesting a line through the middle of her screen.  The computer is an absolute work of art but wildly not robust.  Christian takes it apart to fix it and now we need to buy another computer for Kelly now instead of in time for next semester.

Kelly's new ThinkPad E520Christian and I put our heads together and decided to buy something a little more robust than the cheapo (but very colorful) Dell girly computers.  We got here a factory refurbished Lenovo ThinkPad E520 for $384.01 — a smokin’ hot deal.  It will be here before Thanksgiving.  Kelly will HATE the color (black), but it is a WAY sturdier computer and has that cool ThinkPad logo embedded in the rubberized top of the computer that gives immediate seriousness cred–much better the foo-fooness cred that derived from her previous pink computer.  Christian’s cable should be here any day now.  In the meantime, we have to survive the weekend with a need for four computers and only two on hand.

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