I saw this painted on a wall in Morelos in February, 2018 and found it irresistible.
You can use the questions I wrote, just a few, all for beginners or you can:
1. Practice numbers.
2. Practice days of the week.
3. Practice time schedule based on 24 hours.
More advanced levels:
1. Compare this street sign with a street sign in your own town.
2. Compare how dentists are viewed. Would a dentist in your home town use a crocodile?
3. Is the advertisement effective? Would you go to this dentist?