Khan/khan-exercises — Issue #7420: Pre-algebra challenge - DID NOT get the challenge patch
Author: KhanBugz
Created: 2011-12-01 02:57:39+00:00
State: open
Labels: other, safari, snowleo

i finished the pre-algebra challenge and i did not get the patch as the Master of Arithmetic blue patch.
all the progression bar is complete and the message stating that i am proficient at this already appeared.
what should i do... i would like to have these patches for collection.

[pre-algebra_challenge.html?seed=36&problem=23 (exponents_2)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=36&problem=23&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=36&problem=23&debug&activity=%5B%5D)

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