This Fluency Activity is a part of the Lesson 2, Unit 6, Grade 1.<br> In this module, students do addition and subtraction within 100 and extend their counting and number writing skills to 120. Give students practice counting by ones and tens within 100. When Happy Counting by ones, spend more time changing directions where changes in tens occur, which is typically more challenging. Conduct the activity as directed in Lesson 1.