(EX. 3 x -2 = -2 + -2 + -2 = -6).
Here is a review video clip from Kahn Academy (not shown in class, but shared as to where to find).
Background -- Positive Integer times Negative Integer
More practice with taking notes from a video source (stop - review - start - etc.) took place. The topic was why multiplying two negatives is always positive. As children, we learned that was the "trick". Math today involves the "why" behind the what we do. This video begins to deal with more abstract thinking and proving how the numbers work. Here is the link to today's note taking video:
Why multiplying two negatives is always positive.
HW: Gold Sheet in MTN: Multiplying integers
