"ANTICIPATING LIKELY STUDENT RESPONSES TO CHALLENGING MATHEMATICAL TASKS" IS THE FIRST PRACTICE OF 5 PRACTICES FOR ORCHESTRATING PRODUCTIVE MATHEMATICS DISCUSSIONS BY MARY KAY STEIN AND PEG SMITH.
You're using standards to develop learning goals for your students. You have found a mathematics task, such as the Ticket Booth from Illustrative Mathematics for example, that promotes problem solving and reasoning. Now you give the task to your students, right? Before doing that, ask yourself, "What's my next move?"