Unit Plan

Ck 12: Elem Math: Completing the Addition Sentence Sums to 20

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[Free Registration/Login may be required to access all resource tools.] The video shows how to count backwards to determine the missing number in an addition problem. The video is followed by practice problems to assess student understanding of the concept.

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Classroom Considerations
  • Knovation Readability Score: 2 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional|practice