What is a practical first step for recognising izhar with noon sakinah?

For recognising izhar with noon sakinah, group examples by one rule at a time, then mix the rules after the learner can recognise the trigger letters. The teacher should connect the written pattern to the sound immediately. For this focus, keep the target narrow and stop the drill once accuracy starts to fall. Look for correct rule selection on new examples without stopping to recite the rule name.