In which I talk with the hosts of Lab Out Loud, science teachers Dale Basler and Brian Bartel, about blogging, active student engagement, flipped classrooms, pseudoteaching, and the Khan Academy:
And I didn’t have a problem with Khan Academy (as a collection of videos) until very recently.
For me, the problem is the way Khan Academy is being promoted. The way the media sees it as “revolutionizing education.” The way people with power and money view education as simply “sit-and-get.”
(c) tcoffey (via Flickr)
If your philosophy of education is sit-and-get, i.e., teaching is telling and learning is listening, then Khan Academy is way more efficient than classroom lecturing. Khan Academy does it better.
But TRUE progressive educators, TRUE education visionaries and revolutionaries don’t want to do these things better. We want to DO BETTER THINGS.
Ironically, everything that is wrong with Khan Academy has been addressed in two previous TED talks:
According to Dan, today’s math curriculum is teaching students to expect — and excel at — paint-by-numbers classwork, robbing kids of a skill more important than solving problems: formulating them. How does Khan Academy foster problem posing and creativity?
Rather than instructing students with Khan’s videos, we should be inspiring them to figure things out on their own and learn how to create their own knowledge by working together. For example, instead of relying on lectures and textbooks, the Modeling Instruction paradigm emphasizes active student construction of conceptual and mathematical models in an interactive learning community. Students are engaged with simple scenarios to learn to model the physical world. In comparison to traditional instruction, Modeling is extremely effective — under expert modeling instruction high school students average more than two standard deviations higher on a standard instrument for assessing conceptual understanding of physics.
Watch one Modeling class in action:
In the clip, the teacher says, “I don’t lecture at all. Instead, I create experiences for the students either in the lab or puzzles and problems for them to solve and it’s up to them to try to figure that out.” I’ve often wondered why this type of teaching hasn’t gotten more attention in the media. Maybe because the teacher is using simple things like whiteboards and bowling balls rather than shiny iPads and SmartBoards?
While Khan argues that his videos now eliminate “one-size-fits-all” education, his videos are exactly that. I tried finding Khan Academy videos for my students to use as references for studying, or to use as a tutorial when there’s a substitute teacher, but I haven’t found a good one. They either tackle problems that are too hard (college level) or they don’t use a lot of the multiple representations that are so fundamental to my teaching (kinematic graphs, interaction diagrams, energy pie graphs, momentum bar charts, color-coded circuit diagrams showing pressure and flow, etc.) Khan Academy videos do not align with proper Physics Education Research pedagogy.
I find it troublesome that the Khan Academy team is not spending time and energy on the pedagogy of teaching math and science, but rather on refining the gaming mechanics of Khan Academy in response to “good” and “bad” behavior of students working through the software exercises. The “gamification” of learning in Khan Academy has had disastrous consequences at the Los Altos school pilot.
There are some truly innovative learning technologies that have been
around for years. If Khan Academy wants to grow out of their infancy as electronic worksheet drills, I hope their team takes a look at these more transformative educational technologies, all of which have been researched and tested:
ANDES Physics Tutor (University of Pittsburgh and the US Naval Academy)
Khan Academy also promotes the “usefulness” of its dashboard for its exercise software. I find most of that information useless, like knowing how many times a student rewound the movie, how many times she paused it, or how long he spent on a module. Those times could be affected by distractions from family, self-imposed distractions like facebook and texting, etc.
Feedback I would find WAY MORE useful:
knowing how many times a student attempted the same problem
knowing the student’s answer history to each problem; i.e, what the student’s wrong answers were
knowing the type of mistake a student made when choosing a wrong answer; e.g., did he forget to square the distance, did she apply kinetic energy conservation instead of momentum conservation, did he disregard the fact that the forces where in opposite directions, did she confuse force of friction with coefficient of friction, did he assume constant velocity when in fact it was accelerating, etc.
software that anticipates and recognizes those common mistakes (like all great teachers do) and gives the students immediate, tailored feedback during the exercise
Finally, everyone is talking about using Khan Academy as a way to do more inquiry and more project-based learning. However, Bill Gates and Sal Khan are not showing any examples about what students and teachers are doing beyond Khan Academy. The news stories are not showing the open-ended problems the kids should be engaging with after mastering the basics — instead they show kids sitting in front of laptops working drills and watching videos. The focus is on the wrong things.
Khan Academy is just one tool in a teacher’s arsenal. (If it’s the only tool, that is a HUGE problem.) Khan Academy can be useful for some kids as vehicle (build skills) to help them get to better places (solving complex problems).
Now let’s please shift the focus (yours and mine) toward the destination.
I was recently interviewed via Skype by Lisianna Emmett, a student in Dr. Strange’s EDM310 class. We talked about pseudoteaching, misconceptions, students’ fear of math and science, and advice for new teachers. You can watch the videos at Lisianna’s blog post: Interview with Frank Noschese.
As Lisianna quickly figured out, I love talking shop. Thanks for the great chat!
Don’t miss out on the conversation happening in the comments! Subscribe to the Aggregated Comment Feed for ALL pseudoteaching posts listed above (which includes this page as well). [Except for “The Mrs. E show” because I cannot find the comments feed for the post😦 ]
This must-watch video is from our friend Derek Muller, physics educator and science video blogger.
Derek writes:
It is a common view that “if only someone could break this down and explain it clearly enough, more students would understand.” Khan Academy is a great example of this approach with its clear, concise videos on science. However it is debatable whether they really work. Research has shown that these types of videos may be positively received by students. They feel like they are learning and become more confident in their answers, but tests reveal they haven’t learned anything. [ed. note: textbook definition of pseudoteaching]
The apparent reason for the discrepancy is misconceptions. Students have existing ideas about scientific phenomena before viewing a video. If the video presents scientific concepts in a clear, well illustrated way, students believe they are learning but they do not engage with the media on a deep enough level to realize that what was is presented differs from their prior knowledge.
There is hope, however. Presenting students’ common misconceptions in a video alongside the scientific concepts has been shown to increase learning by increasing the amount of mental effort students expend while watching it.
2008 Muller, D. A., Lee, K. J. and Sharma, M. D. Coherence or interest: Which is most important in online multimedia learning?, Australasian Journal of Educational Technology,24(2), 211-221
The implication of Derek’s research, both for online science videos and for in-the-classroom science lessons, are obvious. Derek discussed his PhD research in more detail in his previous post “What Puts the Pseudo in Pseudoteaching?” You can find more of Derek’s videos at Veritasium.com or on the Veritasium YouTube Channel. Follow him at @veritasium on Twitter.
Plus: Don’t miss out on the conversation happening in the comments! Subscribe to the Aggregated Comment Feed for ALL the pseudoteaching posts in this series.
As always, we’d love for you to contribute your own examples of pseudoteaching. Just email/tweet me a link to your pseudoteaching post and I’ll add it to the series. Thanks!