Extremely common
Descending at idle power. Level off without adjusting power.
(The student will do it again but eventually it sinks in)
Climbing, level off by adjusting power first instead of going APT.
Forget use of carb heat with low power. At this stage it's best to fail their engine on them as it seems to bring the point across rapidly.
Recovering from a stall by going POWER then nose forward.
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