This Fluency Activity is a part of the Lesson 29, Unit 1, Grade 1. This activity supports students' ability to relate counting back 2 to subtracting 2. Tell students you are going to say a number aloud, and instruct them to think about the number that is 2 less. Let them know you will cold call students to say the answer as quickly as possible. Alternate between calling on individual students, the whole class, and groups of students (e.g., only girls, only boys, etc.).
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