Order of OperationsPosted: February 5, 2013
Two videos solving the same question. Can you figure out which one is correct?
I really like this challenge question. In particular, the second one solved show’s a few of the classic mistakes that my students make. They choose to divide first, and a negative in front of two numbers added makes both numbers negative (even though there are no brackets there). I like this idea of having students try to decide which is the correct approach.