A Different Approach to Parallel and Perpendicular Lines
You know that day when you think you've come up with a novel way of teaching something in your classroom? And it works? And you're so proud of yourself? Then, a few days later, you read a blog post or see something on pinterest and realize that your idea wasn't novel at all. You'd actually read about somebody else doing it in their classroom, forgotten about it, then been reminded of the idea by your subconscious. At least I guess that's how it works.
Any who, that happened to me this past year with parallel and perpendicular lines.