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Showing posts with the label dividing complex numbers

#Teach180: Days 51-60

This year I'm taking part in the #teach180 twitter challenge.  The challenge is to post one picture from your classroom each day of the school year.  I am also writing a biweekly post to share the resources that I tweet out. Day 51:  Today was a quiz day.  I give cumulative quizzes every fifth day of class.  On this particular quiz, I had quiet a few students attempt to simplify a fraction by "canceling across addition or subtraction."  I need to reinforce this again obviously.  I've tried doing simply arithmetic examples and showing how the fractions are not equivalent.  Any other ideas on how to show students that this does not work? #NeedARedStamp "can't cancel across +/-" #teach180 pic.twitter.com/KBKH9A91H5 — Jennifer Abel (@abel_jennifer) November 10, 2016 Day 52:  Today in geometry we started reviewing for midterms.  The exams are about 2 months away, but I'm starting to build in a review activity several times per wee...