Each challenge consists of a set of jits along with a target # of sessions per jit. May be bound by time as well (e.g. "must complete within 1 month of start")
Pedagogical goal is proficiency within a theme thru repetition. Sequence/order within challenges do not matter.
"Challenges" structure can be used for future curriculum/instructor/etc capabilities
When challenges are completed, user get a permanent badge on profile (maybe also shareable on social media)
Examples of challenges:
blue belt challenge: need 8 sessions each of these 15 fundamental jits
christmas challenge: 40 sessions of crucifix
comfort zone challenge: 5 sessions of a jit category you've never done before (this requires more backend data calculation)
Requirements:
Examples of challenges: