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Horizon

Horizon hizo un comentario, 22 de marzo de 2018 12:14
Music Theory seems like an interesting topic, but the prospect of DLC in Khan Academy doesn't seem very fitting.
Horizon creó una publicación, 24 de enero de 2018 14:33
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On a regular math practice, a student must get all questions correct in order to progress to mastery. However, if the student in question gets one question wrong, they must progress to completion ...
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