https://www.youtube.com/watch?v=lOIP_Z_-0Hs
Then we discussed the counting principle, permutations (where order matters) and combinations (creating groups of things where the order does not matter). We showed how to use these items on the calculator as well as the factorial (!) symbol.
We completed about half of the 11.1 packet together.
HW: Complete the WS 11.1 packet