This Fluency Activity is a part of the Lesson 30, Unit 4, Grade K. This activity assesses students' progress toward mastery of the required fluency goal for kindergarten: Add and subtract within 5. If students need concrete materials to complete the Practice Sets, encourage them to use their fingers. Most naturally stop the practice as they master the grade level fluency and move quicker. Some students may want to create drawings to solve. Encourage them to find faster, accurate ways to solve the equations.