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Subtraction: Unknown Addend Problems Bundle with Game

1st Grade • Lesson Plan Bundle

Lesson Plan Description

Really understanding that subtraction and addition are related is more complicated than memorizing math facts.  Help your 1st graders “see” and explain the relationship in this 2 segment bundle of lessons.  Your students will:

  • Segment 1: collaborate with their peers to practice the “language” and “why” of the Addition Commutative Property, practice subtracting as an unknown-addend problem using manipulatives, and display their understanding of using subtraction as an unknown-addend problem
  • Segment 2: play a “game” in order to demonstrate their understanding by turning subtraction problems into addition problems

These lessons can be taught over the span of a half day or you can use the lessons independently, broken up over several days.