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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
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written by someone who had completely forgotten math
The hardest part was realizing that the questions were case sensitive, eventhough I was sure I had read the full specs. :|
It's a good teaching tool in that people will learn to really understand the specs, but the rating will probably be lower than if "The questions are case sensitive" had its own line in the specs or was more obvious some other way.