auxiliary verbs versus modal auxiliary verbs

(TESOL Worksheets--Teacher Training, Modal Verbs)
Google: slides, pub
This is a game to review the differences between auxiliary verbs and modal auxiliary verbs.  I used this for teacher training, but I suppose it could also be student facing.  Participants are put into teams.  They are shown a prompt, and must decide if it describes auxiliary verbs or modal auxiliary verbs.  The answer is displayed on animation, and then examples are shown on the next slide.