This Fluency Activity is a part of the Lesson 3, Unit 1, Grade 1. Reviewing number bonds allows students to build and maintain fluency with addition and subtraction facts within 10 and gets them ready for the upcoming lesson. Distribute Dash face down to students. Instruct students to flip their papers when they hear, "Go!" and complete as many number bonds as they can in 90 seconds. Assure them that it is okay if they run out of time before they finish.