Songs: Smaller Batches in eLearning

Posted July 19, 2011 by Joshua Kerievsky

As you may know, our online learning (http://industriallogic.com/shop) uses a music metaphor in which our content is organized into albums, box sets, playlists, compilations, etc. Every album we have is composed of tracks. We've recently been measuring how long it takes people to get through our tracks. Some of our tracks take, on average, about 20 minutes while others (especially the ones with programming exercises) can take up to two hours. When was the last time you listened to a 20 minute song?

Listening To The Metaphor

If popular songs are 2-5 minutes in length, what could we do to make our tracks more like songs? 45 RPM Single I started to answer that question by looking at our popular Code Smells album. In that album, we had a track called Common Code Smells, which contained 20 pages of information, quizzes and videos on the following smells:
  • Dead Code
  • Duplicated Code
  • Comment
  • Long Method
  • Large Class
5 out of the 20 pages were on the Long Method smell. I wondered what it would be like if Long Method was its own track? But just calling the track "Long Method" sounded boring. What would make it feel more like a song? Then it hit me: "The Long and Winding Code" (based of the popular Beatles song, The Long and Winding Road). I liked that so much that I went on a search for song titles for every smell in our Code Smells album. Here is the result of that work:
Smell Song Artist
Dead Code This Is The End, Beautiful Friend The Doors
Duplicated Code Oops!...I Did It Again Britney Spears
Comment Communication Breakdown Lez Zeppelin
Long Method The Long and Winding Code The Beatles
Large Class Welcome to the Jungle Guns N' Roses
Oddball Solution When You're Strange The Doors
Primitive Obsession If I Had A Hammer Lee Hays and Pete Seeger
Switch Statememt The Choice Remains The Same Led Zeppelin
Speculative Generality You Can't Always Guess What They Want Rolling Stones
Long Parameter List Too Much Information The Police
Conditional Complexity Tangled Up In Blue Bob Dylan
Combinatorial Explosion Here, There and Everywhere The Beatles
Alternative Classes With Different Interfaces You Say Tomato, I Say Tomhato Louis Armstrong
Inappropriate Intimacy Don't Stand So Close To Me The Police
Indecent Exposure Hello, I Love You The Doors
Refused Bequest Don't Pass Me By The Beatles
Black Sheep Should I Stay Or Should I Go? The Clash
Data Class Still Haven't Found What I'm Looking For U2
Solution Sprawl Across The Universe The Beatles
Feature Envy I Wanna Hold Your Hand The Beatles
Temporary Field Every Little Thing You Do Is Tragic The Police
Side Effect Dust In The Wind Kansas
 

Smaller Learning Batches

Since around 2007, my colleagues and I at Industrial Logic have been heavily influenced by Lean Software Development. We've been reducing our own batch sizes of work to smaller and smaller amounts, which has led us (during the past year) to Continuous Deployment (i.e. every checkin to version control goes live to our site). But what about our students? We had not applied Lean thinking to the experience our students have, especially when they go through our online training. Smaller tracks are small batches of learning. So the song metaphor has helped us discover a way to make learning easier and more enjoyable for our students.

Testing, Testing, Testing

Since adopting the Lean Startup process, we are not content to just "hope" that students will like our shorter-length tracks (i.e. songs) better than the longer ones we used to have. We have to measure it. So in the following week we will be carefully measuring track completion rates and interviewing students to understand whether the song metaphor is helping or hurting their learning.
  • cem@yahoo-inc.com

    AC/DC is missing from the top of list 🙂

  • Ashahzad

    I like this co-relation between code smells and song names.
    I have been trying hard to somehow remember this list of code smell names. But the names are “boring” and with this co-relation, it makes the learning and future recalls easy 🙂

    • Joshua Kerievsky

      Great to hear that! It was hard to come up with the right song titles for each smell. So glad you appreciate it!

  • http://twitter.com/kartzontech Kartz Sirasanagandla

    Extreme Metaphor-ism! This article deserves to be read by every product team. I wish the beginning of this article or somewhere where appropriate, the “Metaphor” should be linked to your earlier article titled “Product Metaphor”.

  • Mike Smithson

    Isn’t it “When You’re Strange” ?

    • industriallogic

      Thanks! 🙂
      It’s fixed now.

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