Person: "Hey doc. It hurts when I go like this. What should I do?"Doc: "Don't go like that."Uh, don't use the distractors that are causing the problem. Instead, try one of these:A. Use regular matching pairs for everything. For the options not to have valid pairs, put a white square that covers where the learner would normally click to match.B. Use regular matching pairs for everything. Then make the items in the right column you don't want the learner to see invisible by unchecking the Initially Visible property.They both work on my system. But of course I did not have the problem you are having.
