This Fluency Activity is a part of the Lesson 21, Unit 4, Grade 2. In this lesson, students develop conceptual understanding of the algorithm when there are two compositions. By practicing addition facts, students gain fluency adding within 20.
This Fluency Activity is a part of the Lesson 21, Unit 4, Grade 2. In this lesson, students develop conceptual understanding of the algorithm when there are two compositions. By practicing addition facts, students gain fluency adding within 20.
