We talk about Tier 1 instruction all the time in math education. But here’s the question: Do we actually have a shared understanding of what strong Tier 1 math instruction looks like… or are we all picturing something slightly different? Because when terms like rigorous, engaging, and grade-level instruction aren’t clearly defined, things start to drift. In one classroom, students might be working through step-by-step procedures, focused on accuracy and speed. In another, they’re exploring mu...