This worksheet is editable in Word to fit your needs! It's designed to encourage deep thinking and explanation of math problems at all grade levels. It has a place for you to type in your problem and you can type the Common Core standard in the footer. The students use the thinking bubble, a working bubble, a checking bubble, and an explanation bubble as they work through the problem with perseverance. Use it for homework or group work, on the smart board, or for assessments.