Started off prep this morning with this question:

And ended up getting an answer:


Anyway, I had the kids expand the sigma notation and I gently guided them towards an unknown goal. They did well, all considering. Instead of it being some formula from a teacher or a book, they have a bit more of a mental grip on the different representations and formula. Here is one group’s scratch work.


I also was able to find this error. A lot! Surprising to me, but useful to know that they have some work to go on sigma notation.



Thanks for the help David Griswold and Jason Merrill!




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