I have been looking for a way to give students customized feedback after they submit their answers. For example, assume a student enters a wrong answer. Instead of just saying the submitted answer is incorrect, I would like to display a message, such as "Oops, that's not an acceptable answer, please try again.", and I would like to give a YouTube video URL for them to watch before they submit another answer.
Is there a way to do this? Maybe it was asked and answered in here, but I haven't been able to find it. I would appreciate any guidance.