Resources and Tools for Elementary Math Specialists and Teachers
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Rectangle Multiplication

This interactive Java applet use arrays and three different computational models (Grouping, Common, or Lattice) to help students visualize and understand the process of multiplication of whole numbers. In each method the user drags sliders to adjust the two factors and then observes the resulting changes in the rectangular array and in the respective algorithm and product.
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Contributed by: National Library of Virtual Manipulatives, Publisher
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, Number Concepts, Mathematical Practices, Mathematical Processes
Grade Level2, 3, 4, 5
Resource TypeActivity, Interactive Media

  • Additional Information
    • AudienceLearner
    • LanguageEnglish (USA)
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorNational Library of Virtual Manipulatives, Publisher
    • Publication Date1999
    • Rights(c) 1999-2010 Utah State University
      http://nlvm.usu.edu/en/nav/copyright.html
    • AccessAvailable for purchase, Free access
  • Standards
    • Common Core State Standards for Mathematics

      Select a standards document: