Super Simple Halloween! Both “Knock Knock, Trick or Treat” and “Knock Knock, Trick or Treat Part 2" are perfect songs for practicing some Halloween language skills and costume names! To take your learning to a new level and be sure to download the free printable wheel to accompany the songs. Spin the wheel and ask “Knock knock, trick or treat, who are you?” to see who is at the door. | Super Simple