If your students can do multiplication and division facts… but fall apart the moment it’s written as a word problem, this center fixes the real problem: they don’t have a repeatable process. They guess. They grab the wrong operation. They write an answer with no model. And when you ask, “How do you know?” you get shoulder shrugs. Solve-on-a-Bag makes word problems concrete, consistent, and easy to assess.Students grab a bag, pull a card, and follow the same routine every time: Build it with