Newell's Nook features this colorful poster with the acronym MATH: Mistakes Allow Thinking to Happen. It is a tool for teachers who teach growth mindset in their classrooms and support students in seeing the power of mistakes in the learning process. It's a reminder that all mathematical thinking is valuable and can help us learn!
You know how you check the time, and sometimes you're SO surprised by how much time has passed (often, wasted) that you have to say it to yourself out loud to really sink in, like "What? It's 11 o' clock??!" Well, this does it silently. I NEED this clock.