This Fluency Activity is a part of the Lesson 7, Unit 3, Grade 1. This fluency activity strengthens students' ability to understand number relationships and to recognize counting patterns. If students are proficient with beep counting by ones, consider beep counting by tens or practicing the Grade 2 standard of counting by twos or fives. Say a series of three or more numbers, but replace one of the numbers with the word beep (e.g., 15, 16, beep). When signaled, students say the number that was replaced by the word beep in the sequence. Scaffold number sequences, beginning with easy sequences and moving to more complex ones.