This Fluency Activity is a part of the Lesson 10, Unit 4, Grade 1. In this Sprint, students recognize forward and backward counting patterns. As with all Sprints, the sequence progresses from simple to complex, with the final quadrant being the most challenging. The last four problems of this particular Sprint involve counting by twos, a Grade 2 standard. Grade 1 students who complete enough problems to encounter this challenge may use their understanding of the relationship between counting and addition to solve these problems.