This is a math fact fluency assessment that takes 1 minute or less and is differentiated. It can be used for addition or multiplication. It's called the Bubble Quiz because of the "bubbles" or circles at the top of each column. The teacher begins by writing in +1 or x1 in each student's first bubble on their sheet. Then the teacher reads off a number at a time from answer key #1. The student listens to the number called off and adds (or multiplies) it to the number in their bubble. To begin with