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Subtraction: Unknown Addend Problems Bundle with Game

1st Grade • Lesson Plan Bundle
$4.00
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Quick Facts

Subject: Math, Operations and Algebraic Thinking

Type: Lesson Plan Bundle

Skills:

  • 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
  • Play a "game" in order to demonstrate their understanding by turning subtraction problems into addition problems

Materials Needed:

  • Blank paper
  • Pencils, crayons/colored pencils
  • Counting manipulatives (10 per student)
  • Decks of cards (1 deck per small group) -or- use optional printable number cards
  • Document camera or whiteboard

Printable Resources:

  • “Exit Slips” (as an optional assessment component, 1 copy per student)
  • “Find the Missing Addend” (1 copy per student)
  • “Subtraction Cards” (1 copy per small group)
  • “Number Cards” (2 copies per small group)

CCSS: 1.OA.4

File Type: PDF Document

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.