Resources and Tools for Elementary Math Specialists and Teachers
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Circle 3

This interactive Java puzzle helps students develop decimal number sense and systematic analysis skills. The applet displays 7 interlocking circles and a set of 14 numbers (in tenths), 5 of them already placed in the circles. Solvers arrange the remaining numbers in the empty sections of the circles so that the three sections of each circle sum to 3. Parent/Teacher information offers instructions and implementation suggestions.
Contributed by: Utah State University, Publisher
Math TopicNumber Sense, Decimals, Mathematical Practices, Mathematical Processes, Basic Operations
Grade Level4, 5, 6+
Resource TypeActivity, Interactive Media

  • Additional Information
    • AudienceLearner
    • LanguageEnglish (USA), Chinese, French, Spanish
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorUtah State University, Publisher
    • Publication Date2011
    • RightsCopyright (c) 1999-2010 Utah State University
    • AccessAvailable for purchase, Free access
  • Standards
    • Common Core State Standards for Mathematics

      Select a standards document:

  • User Comments
    • 5
      Practice and Practice Standards
      By Uncle Bob on 03/02/2013 - 16:35
    • The trial and error approach and the difficulty of this task provide much practice in mental math, and also opportunities for appreciating the place-value relationships and for creating shortcuts through repetition.