Each day, students complete a Warmup that usually consists of spiraling the previous day's material, in addition to older material. Warm-up problems also sometimes extend lessons that students have encountered before to more unfamiliar contexts.

In today's warm-up, the first question is designed not only to review an old skill, but to prime their brains to figure out today's lesson with less scaffolding from me. I like doing this periodically, which allows the Play of the Day to flow more effectively and naturally (rather than stopping for a quick review, which eats up time and momentum).