Said in a laid-back tone, like it doesn’t matter

“Let me wrap up here,” Mr. Gladly said, “Sorry, guys, but there is homework for the weekend.  Think about capes and how they’ve impacted the world around you.  Make a list if you want, but it’s not mandatory.  On Monday we’ll break up into groups of four and see what group has the best list.  I’ll buy the winning group treats from the vending machine.” (1.1) 

Matter-of-fact tone

“We’d have a discussion about what’s been going on.  You would name the person or people you believe responsible, and each of them would be called in to talk to the principal, in turn.” (2.3) 

Concerned tone

“I saw the mess left on your usual seat today.  I remember a few weeks back when glue was smeared on your desk and chair.  There was also the incident that happened at the start of the year.  All of your teachers had a meeting about that.” (2.3)