Resources and Tools for Elementary Math Specialists and Teachers
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Multiply and Conquer

This lesson helps students develop conceptual understanding of 2-digit multiplication. Students decompose 2-digit numbers, model area representations using the distributive property and partial product arrays, and carry out paper-and-pencil calculations from the arrays. Included are student activity sheets, a link to a supporting online applet, and extension suggestions.
Contributed by: National Council of Teachers of Mathematics - Publisher, Lisa Cartwright - Author
This resource is included in the following PD Collection(s):
Rectangular ArraysThis collection includes resources for introducing both discrete (separate objects) and continuous (area model) arrays to young learners. The resources provide suggestions about how to use arrays to introduce students to ways of organizing collections of objects, to repeated addition, to multiplication, to factorization, and to area. Helping young learners to develop a deep understanding of the characteristics of arrays will provide the foundations they will use when learning about multiplication and division, area measurement, and fractions.
Math TopicNumber Sense, Basic Operations, Mathematical Practices, Mathematical Processes
Grade Level3, 4, 5
Resource TypeActivity, Lesson Plans

  • Additional Information
    • AudienceEducator, Learner
    • LanguageEnglish (USA)
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorNational Council of Teachers of Mathematics - Publisher, Lisa Cartwright - Author
    • Publication Date2000
    • RightsCopyright (c) 2000 - 2011 National Council of Teachers of Mathematics
    • AccessFree access
  • Standards
    • Common Core State Standards for Mathematics

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