In my previous post, you might remember my goal is to bring as many students as possible into math conversations and this principle accomplishes it. To illustrate this point, I will reference the following visual.
I have not included any directions on purpose or stated any facts about the visual. I would display this image to students as is because I want to give students the chance to make sense of it in their own way (see MP1). Yes, I could have removed more from this image and have done that before because once you see it, you can't unsee it. However, I'm using this specific image for reasons that will be revealed in my next two posts.
The main reason I haven't included directions with this visual is because I'm inviting my math students through the next lesson design principle: "Tell me everything you know about this."