Khan/khan-exercises — Issue #11968: Counting 2 - Problems are all the same & topic needs a video !
Author: KhanBugz
Created: 2012-01-24 03:07:33+00:00
State: open
Labels: chrome, other, win7

Reporter: yaserj2004@hotmail.com

First of all I think the counting modules are great. I can do advanced high-school math but I often have difficulty with seemingly trivial problems like these. There are two problems with this module:

1) There is no video on the issue!
I have to get the question wrong and check the solution before I learn how to do that particular type of problem. It would be very helpful if Sal could create a few videos (or if there are already videos on the topic, link them to the module) for this topic.

2) The problems aren't different questions on the same topic, they are the same question with a different value (a different question would be phrased differently). While that's fine for algebra/trig/arithmetic it doesn't work very well for these modules because you learn the "formula" immediately since the questions are phrased the exact same way but with a different number - e.g " Multiply then divide by two" or "take away one then add X" etc..
I understand that it's difficult to generate good questions and that it makes more sense to just change the variable of the number. I would suggest perhaps creating of 4 or 5 different questions for each type (by type I mean the different types within each module e.g. Counting,number of combinations, exclusive counting, inclusive etc)

Just my two cents.

Thanks for giving the world an education.

[counting_2.html?seed=104&problem=every-n](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=104&problem=every-n&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=104&problem=every-n&debug&activity=%5B%5D)

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