Starter:
This isn't as tricky as it might seem. You're really just showing how the numbers can be paired up and moved around: you don't really know what the numbers are to be able to do that. You will need the additive inverse and the multiplicative identity, and most of the other properties we've used this week.
1st, 2nd, 5th, 6th, and 7th periods will join the discussion 4th period started yesterday, exploring some of the mistakes made on the CFA and how to avoid them.
4th period may re-take the CFA, or they may get some more practice with properties of operations: we will decide as a class.
6th period will take the CFA.
