Resources and Tools for Elementary Math Specialists and Teachers
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5 on the Clock

This problem reinforces the telling of time on a digital clock, and it requires students to work systematically. The number of 'times' the digit 5 appears in a 24-hour period is a matter of a solver's assumptions. Ideas for implementation, extension and support are included along with a printable poster. A link to an interactive Class Clock (cataloged separately) is provided.
4
(1 Comments)
Contributed by: Millenium Mathematics Project, Publisher
Math TopicMeasurement, Mathematical Practices, Mathematical Processes, Basic Operations
Grade Level3, 4, 5
Resource TypeActivity

  • Additional Information
    • AudienceLearner
    • LanguageEnglish (United Kingdom), Chinese, Dutch, French, German, Italian, Spanish
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorMillenium Mathematics Project, Publisher
    • Publication Date2008-12
    • RightsCopyright (c) 2007 University of Cambridge
      http://nrich.maths.org/public/terms.php
    • AccessFree access
  • Standards
    • Common Core State Standards for Mathematics

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  • Related Resources
  • User Comments
    • 4
      Nice problem in digital time
      By Uncle Bob on 10/01/2012 - 16:57
    • Students must envision a full day's minute by minute time on a digital clock, while solving a problem and keeping good records.