Seems pretty clear that the ability to learn and how natural some given method or aspect is will vary by individual.
Being attentive and perceptive of the changes in the classroom atmosphere, along with mindfulness of known averages of human attention and memory, will go a long way towards the students success.
Will also help develop skills of the instructor.
Most of it's pretty common sense, but specifics like attention span or ability to recall verbal vs written instruction and sequences will keep engagement up.
