This Fluency Activity is a part of the Lesson 10, Unit 1, Grade 1. Providing students with ongoing practice with counting throughout the year builds and maintains their counting skills, which are foundational for later Grade 1 work using the Level 3 strategy of making ten and taking from ten to add and subtract. Repeat the Happy Counting activity from Lesson 3 Fluency Practice counting from 15 to 25 and back the Say Ten Way.