This Fluency Activity is a part of the Lesson 19, Unit 2, Grade 1. Say Ten counting strengthens understanding of place value. It is used throughout Grade 1 Fluency Practice, beginning in Module 1, Lesson 4. Practice Say Ten counting from 0 to 40 and back. Count for two minutes. Then, have students see how many numbers they can write from 10 to 40 in two minutes.