Ben was supposed to have a Quiz on Tuesday this week, but we had to prioritize the NWEA Testing. Since he finished, I didn't want to give him the quiz without reviewing with him once more. Ben did excellent during the review. He stayed engaged, asked questions when he was stuck, and showed his understanding. We practiced 3 problem types that will be on tomorrow's quiz. While working, Ben made an impressive observation about horizontal and vertical lines. He said, "the formula is not needed to compute the slopes if you can identify that the x values are equal, then it must be a vertical line so the slope is undefined. And if the y values are equal then it must be a horizontal line so the slope is 0." I was so impressed! I told him that if he can remember that observation then he's right, no formula is needed and I wouldn't expect him to "show work" on those problems. Ben will have a quiz tomorrow.