Year: 2012

Total 137 Posts

Vi Hart v. Sal Khan

Timon Piccini mashes up one of Sal Khan’s lectures with one of Vi Hart’s indictments of lectures and the result is difficult to watch:

Of course, Khan went on to hire Hart, a partnership which could be yielding all kinds of fruit. If anybody has noticed Khan innovating on his format since he picked up Hart, drop me a line in the comments.

Featured Comment

Mr. Bombastic:

The KA lectures may or may not be effective in helping people with math, depending on your idea of โ€œhelpingโ€. The KA problem sets are almost certainly going to give many students the impression that they know and understand something that they do not. Naive teachers may be taken for a walk along this primrose path as well. For that reason I think the problem sets could be quite destructive. I donโ€™t object to checking for mastery, but KA doesnโ€™t even come close to having assessments that measure mastery.

2012 Mar 24. James C. points out this collaboration.

BREAKING: BLOGGER DESIGNS WEBSITE FOR SHARING NICHE CURRICULUM INTEREST

Let me invite you to check out 101questions, a website I’ve been building since last fall.

Other websites will let you “like” something or call it a “favorite” or “interesting” or give it a thumbs up or a +1. As a teacher, I don’t aspire to any of those things as much I aspire to be perplexing. I want to perplex my students, to put them in a position to wonder a question so intensely they’ll commit to the hard work of getting an answer, whether that’s through modeling, experimenting, reading, taking notes, or listening to an explanation.

A lot of my most perplexing classroom moments have had two elements in common:

  1. A visual. A picture or a (short) video.
  2. A concise question. One that feels natural. One that people can approach first on a gut level, using their intuition.

Let’s call that a first act. There are still two more acts and a lot of work yet to do, but the first act is above and before everything else.

It’s been difficult for me to know in advance whether or not my first acts will perplex my students. Sometimes they confuse my students. Sometimes the warped lens I have on the world indicates something perplexing but it bores my students. For awhile I inoculated myself against that possibility by tossing the photo out to my Twitter followers and asking them “Any questions?

Their responses have been extremely helpful, but limited in some ways that 101questions will fix. I’ll describe those in more detail in another post.

For now, check it out. Ask some questions. Upload a first act. Wait for the questions (or skips) to roll in. Then figure out how you’ll help your students get answers.

I Would Have Loved Khan Academy In Eighth Grade

Not to make my my position overly complicated, but I would have loved Khan Academy as an eighth grader, when I was first learning algebra.

My twin sister and I were homeschooled up until ninth grade when the difficulty of math outstripped my mom’s ability to teach it to us. So we ordered a stack of VHS tapes featuring Leonard Firebaugh and his whiteboard. I can’t believe I’ve never connected his videos to Khan Academy until now.

Those videos were boring but I was grateful for them because the alternative was nothing. So let me say that I completely understand the enthusiasm you’ll find from homeschool parents in the comment threads of any given report on Khan Academy. (The religious homeschoolers offer Khan their prayers in addition to their thanks, and I understand that too.) When Mark Halberstadt thanks Khan for helping him clear hurdles to study electrical engineering at Temple, I don’t have anything in me except gratitude for the fact that something existed for Halberstadt where once there was very little.

I was grateful for Leonard Firebaugh because the alternative was nothing. But better than nothing and better than Leonard Firebaugh were the classrooms of Messrs. Selim, Cavendar, Bishop, and Whipkey, where we did math more than any one person talked about it, where I had to unlearn and relearn a lot of Algebra I thought I had mastered. You couldn’t combine the two. You couldn’t pause the doing of mathematics and then turn us over to watching someone else do mathematics for upwards of ten to twenty minutes. It would have been a collision of two hostile worlds.

Sal Khan On 60 Minutes

Sanjay Gupta, introducing Khan Academy:

Take a moment and remember your favorite teacher. Now imagine that teacher could reach, not thirty kids in a classroom, but millions of students all over the world. That’s exactly what Sal Khan is doing on his website Khan Academy.

If your favorite teacher did anything other than lecture for 10-20 minutes continuously, though, Khan Academy may seem like several steps in a different direction.

Students Don’t Like The Videos

60 Minutes reported the quantity of videos Khan has produced and the time and effort it took to make them. It didn’t report the efforts some students take to avoid watching them. Here’s a white paper from Stanford’s d.school:

We were surprised to find that students preferred to teach themselves or each other through the practice problems and hints rather than watching the Khan videos.

My own classroom observations confirm theirs and a Khan Academy employee confirmed both: kids watch videos as a last resort after exhausting other efforts, some of which don’t look much like “learning.”

Pivoting From The Flipped Classroom

That is a critical design challenge for Khan and his team as they put distance between themselves and the “flipped classroom” model he promoted in his TED talk a year ago.

Then:

And the teachers would write, saying, “We’ve used your videos to flip the classroom. You’ve given the lectures, so now what we do … ” โ€“ and this could happen in every classroom in America tomorrow โ€“ ” … what I do is I assign the lectures for homework, and what used to be homework, I now have the students doing in the classroom.”

Last night:

I kind of view [the flipped classroom] as a step in the direction. The ideal direction is using something like Khan Academy for every student to work at their own pace to master concepts before moving on and then the teacher using Khan Academy as a tool so that you can have a room of 20 or 30 kids all working on different things but you can still kind of administrate that chaos.

This is a enormous expansion of the Khan Academy vision. No longer is the message, “Do the basic skills with Khan Academy outside the classroom to free up time for projects and higher-order thinking inside the classroom.” That message raised a lot of interesting questions which are now moot. (eg. “Why are video lectures the best way to learn basic skills? Why are we separating basic skills and higher-order thinking? Who decides which is which?”) Now Khan Academy is the classroom. Kids come into class, sit in front of a laptop, put on headphones, and pick up where they left off from the last class. The teacher monitors the class dashboard and offers coaching when necessary. If you think I’m extrapolating too much from Khan’s remarks, the same Khan Academy employee confirmed that vision to my Stanford team a few months ago.

We could argue whether or not that kind of future for our math classrooms is depressing and dystopian but all available evidence indicates that kids won’t put up with it. I’m curious what changes, if any, Khan will make in response to the evidence that kids don’t like watching his videos.

BTW: The strangest editing decision CBS made last night.

BTW: Edtech Hulk has the vibe surrounding Khan Academy and the just-announced TED-Ed exactly right.

2011 Mar 13. Sue Van Hattum e-mailed to suggest that the middling student reception to his videos explains Sal Khan’s hiring of Vi Hart and Brit Cruise, both of whom do good work with video. I think that’s plausible.

2011 Mar 14. I Would Have Loved Khan Academy In Eighth Grade.

2011 Mar 14. Welcome, EdSurge readers. Let me point out that EdSurge rebuts [amended below] the d.school’s report that kids make efforts to avoid watching Khan’s videos (confirmed by a Khan employee and my own observation) with no stronger evidence than a) an iPad app released by Khan Academy this week and b) a Gates Foundation op-ed. We’re all playing on Team Student Learning here. It does nobody any good to paper over bad news. Let’s figure out the nut of the problem and fix it. Take it as a design challenge for EdSurge’s design-minded readership.

2011 Mar 14. I misinterpreted EdSurge as rebutting my case. According to their editor, that wasn’t their intent. Here is the item in its entirety:

THE FUTURE OF EDUCATION: That’s how CBS 60 Minutes–like so many others–billed the Khan Academy in its feature of Salman Khan last weekend. Such great PR has Dan Meyers on his feet, pointing to studies that say students don’t actually like watching Khan videos. Dan also notices a discourse shift from emphasis on flipped classrooms to a model where the Academy is the classroom. His take: “all available evidence indicates that kids won’t put up with it.” Khan clearly feels otherwise, particularly as it is now offering a collection of ipad apps. A cogent argument in favor of blended learning is set forth by Stacey Childress of the Gates Foundation in the Harvard Business Review. It’s among the most read pieces in the issue. Full disclosure: EdSurge has received support from the Gates Foundation for our beta website.

“It’s Killing Me. I Gotta Know.”

Frank Noschese, on last week’s ceiling fan:

I’m dying to see the third act.

Ginny, a participant in my qualifying study at Stanford, on the water tank:

I’m dying of curiosity. Is that anywhere near the right answer?

Andrew Stadel’s student, on the path of the basketball:

Can we watch the video to see if he makes it? It’s killing me. I gotta know.

All three describe the experience of not knowing the answer to a math problem as something like death. A math problem. How does that happen?

My best guess? You start with a credible document of the world your students live in. That could be an actual water tank in the classroom or a representation of a water tank on video. It has to be credible. Then you document something happening โ€“ the tank filling, the fan spinning down, the ball sailing through the air โ€“ long enough for a learner to have a sense of what is happening and what might happen next.

That’s where you end the document. Then work happens. The work is motivated in part by the student’s knowledge that the answer actually exists, that the teacher talks a huge game about math being everywhere and in everything and we’re about to put that to a test.

Then you show the answer.

Please watch this video of Ginny watching the answer to the water tank problem. This moment was incidental to my actual research question. I have no way of knowing if Ginny would have experienced the same mixture of suspense, elation, and catharsis reading the answer to the same problem in the back of her textbook. I only know that if you had told me in my first year teaching that suspense, elation, and catharsis were possible reactions to a math problem, as much as I loved math myself, I would have thought you were crazy.

Previously: You Don’t Have To Be The Answer Key, Handle With Care.

2012 Oct 2. Rachel Kernodle writes about Bean Counting: “… the 4 groups that correctly got the extension with no help from me literally SCREAMED and high-fived each other when I played the answer video ….”

2012 Oct 2. Chris Robinson writes about Taco Cart: “More student comments from @ddmeyer ‘s Taco Cart #3act: I’m losing sleep over the answer, this problem is killing me. Teachers, #3act works. Students made me replay the answer to @ddmeyer’s Taco Cart #3act so they could provide play-by-play in the style of a horse racing announcer.”