That idea really works bing ding!

I love it when subs leave me detailed notes- also try to find out a trustworthy student who can tell you if everyone else is telling you the truth. If something happens, try to write down specifically who did what, and if you can have them write down what they did.

Never let them see you sweat. If it is elementary, bring a book with you to read aloud just in case you have extra time at the end of the day, or I love asking kids questions off of those quiz cards that are sold in sets at walmart.

Have the kids clean up before they leave for the day. It always puts a damper on my day if I come in after a sub and the room is a mess & all the kids are angry/upset.

Good luck!