If you've spend some time using Khan Academy in your classroom, you've likely realized that students would rather click through the hints, ask each other, or ask you about solving an exercises rather than watch a video on it. There's even a fancy study from "Blend My Learning" that experienced the same thing.
"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." (Page 4)
KA devs, do you have data on students clicking for a video vs. students clicking on hints that shows this as well by chance? Just curious.
From the Student's Perspective
Student starts the exercise. "Hmm, I think I know how to do this". Inputs answer. Sad face. "Aw man, then how the heck do you do it?". Student faced with a decision:
1) Should I watch a 5-10 min. video where Sal MIGHT go through this exact problem?
2) Should I click through the hints and see all the work.
3) Should I ask my friend sitting right next to me.
As with every human being, the student will take the path of least resistance (time). In almost every case, students choose 2 or 3, THEN 1. So really, the hints and other students are teaching students more often than Sal. Uh oh. Let's hope every student is an excellent teacher.
From the Teacher's Perspective
A well planned math unit starts with an assessment. Then you plan what and how you teach the concepts. However, in Khan Academy, all of the assessments (exercises) were developed AFTER all of the teaching materials (videos). Naturally, this means the videos aren't always directly aligned to the exercises. That's why students don't wach the videos. And because they're out to make our lives as difficult as possible.
What Should We Do About It?
Make example videos for all of the exercises. (I'm workin' on it). Directly based on the exercise. Much like the following video. The teacher can take care of the conceptual understanding in-class (through hands-on examples, models, PBL, etc.)
I'd love to hear your thoughts/comments. Have you experienced the same in your classroom?