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Comparing Connecting Cubes

In this 6-lesson unit, students explore 5 models of subtraction (counting, sets, number line, balanced equations, and inverse of addition) using connecting cubes. The lesson activities focus on the comparative mode of subtraction as children investigate the relationship between addition and subtraction, write story problems in which comparison is required, and practice the subtraction facts. The lessons include printable student activity sheets, a bibliography of children's counting books, questions for student discussion and teacher reflection, assessment options, extensions, and links to online applets (cataloged separately).
5
(1 Comments)
Contributed by: National Council of Teachers of Mathematics - Publisher, Grace M. Burton - Author
Math TopicNumber Sense, Basic Operations, Number Concepts, Mathematical Practices, Mathematical Processes
Grade LevelK, 1, 2
Resource TypeActivity, Lesson Plans, Unit of Instruction

  • Additional Information
    • AudienceEducator
    • LanguageEnglish (USA)
    • Education TopicTeaching strategies
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorNational Council of Teachers of Mathematics - Publisher, Grace M. Burton - Author
    • Publication Date2012
    • RightsCopyright (c) 2000 - 2013 National Council of Teachers of Mathematics
      http://illuminations.nctm.org/termsofuse.aspx
    • AccessFree access
  • Standards
    • Common Core State Standards for Mathematics

      Select a standards document:

  • Related Resources
  • User Comments
    • 5
      Great Variety
      By bethb on 02/20/2013 - 12:53
    • I like how this unit contains a variety of models and strategies to build conceptual knowledge of subtraction.