Khan/khan-exercises — Issue #7724: Kinematic equations - Spaced Repetition
Author: KhanBugz
Created: 2011-12-04 15:14:16+00:00
State: open
Labels: firefox, other, win7

Reporter: arlemagne1@gmail.com

Have you guys ever heard of a program called Super-Memo?

I first read about Super-Memo here.

http://www.wired.com/medtech/health/magazine/16-05/ff_wozniak

A quote from the linked article:

SuperMemo is based on the insight that there is an ideal moment to practice what you've learned. Practice too soon and you waste your time. Practice too late and you've forgotten the material and have to relearn it. The right time to practice is just at the moment you're about to forget. Unfortunately, this moment is different for every person and each bit of information. Imagine a pile of thousands of flash cards. Somewhere in this pile are the ones you should be practicing right now. Which are they?

Fortunately, human forgetting follows a pattern. We forget exponentially. A graph of our likelihood of getting the correct answer on a quiz sweeps quickly downward over time and then levels off. This pattern has long been known to cognitive psychology, but it has been difficult to put to practical use. It's too complex for us to employ with our naked brains.

Anyway, I use the program with my daughter. In the months she's been using it, she has memorized with complete mastery over 430 Hebrew words and sentences including verb conjugations. She should be speaking fluent Hebrew within two years. I will have taught her a language I don't even speak myself. I believe that this type of learning is the most powerful educational tool available. I believe it has the ability to transform Khan Academy from the awesome tool it is already to one that's even MORE effective for lifelong learners.

Hope there's a way you can incorporate the spaced repetition technology into Khan Academy (if you haven't yet done so already).

[kinematic_equations.html?seed=65&problem=freefall](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/kinematic_equations.html?seed=65&problem=freefall&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/kinematic_equations.html?seed=65&problem=freefall&debug&activity=%5B%5D)

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