Terrific course delivery

As a sub I rarely see the regular teacher in action but circumstances arranged that I did and her organization/delivery was spectacular. High school/ social studies. 1) call roll and each student demonstrated presence by walking to the phone caddy and putting their phone in. 2) ~ 10 minutes of silent reading (looked like different books). 3) ~10 minute power point projection of ~ 6 vocabulary words. 4) written assignment (based upon vocab words I think) 5) turn in written assignment and retrieve phone. It was BEAUTIFUL!!