This Fluency Activity is a part of the Lesson 31, Unit 1, Grade 1. Scaffold tasks by carefully selecting numbers that are most appropriate for learners. Some students would benefit from a longer sequence to make the pattern more apparent. Challenge higher-level students by changing the placement of the beeps or using more challenging number sequences. This fluency activity helps students recognize patterns while building fluency with adding and subtracting 10. Say a series of three numbers but replace one of the numbers with the word beep.