This lesson on coordinate geometry suffers from being unclear on what the students already know going into the lesson and what the objectives are. It also has some inaccuracies ("Four lines which make a triangle...") and a confusing assignment drawing different lines with the same name.
May 16, 2013
Agree with previous comment. I like the questions based on the first graph. Not enough practice finding distance of a diagonal line. It would require a bit of editing to…