This is a full 1-hour (or block day) lesson on completing the square that can be used in Algebra and beyond. The lesson format is in a PowerPoint presentation. It begsins with a warm-up, then specific examples for notes, checking for understanding, a whole-class guided practice problem, partner activity, critical thinking problems, and independent practice problems. The critical thinking questions give students the opportunity to analyze, make connections to the real world, and synthesize inf