Multiple “correct” answers are integrated into the learning system to allow individualized learning experiences in which {HEAD ~ navigation} through {TAIL ~ the system} is at a pace controlled by the learner 
through
Multiple “ correct ” answers are integrated into the learning system to allow individualized learning experiences in which { HEAD ~ navigation } through { TAIL ~ the system } is at a pace controlled by the learner
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH