Resources and Tools for Elementary Math Specialists and Teachers
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Find Your Longitude

This interactive lesson helps students connect time and longitude on a globe. Learners use the time discrepancy between their location and Greenwich, England, and a conversion factor to determine their longitude. Several exercises of varying difficulty and precision are provided. The historic background and vocabulary definitions of this topic are provided.
Contributed by: Public Broadcasting Service (PBS), Publisher
Math TopicGeometry, Measurement, Number Sense, Decimals, Fractions, Basic Operations, Number Concepts, Mathematical Practices, Mathematical Processes, Other Math Topic
Grade Level5, 6+
Resource TypeActivity, Interactive Media, Lesson Plans

  • Additional Information
    • AudienceLearner
    • LanguageEnglish (USA)
    • Education Topic
    • Interdisciplinary ConnectionScience, Science:Earth science, Social Studies
    • Professional DevelopmentNo
    • ContributorPublic Broadcasting Service (PBS), Publisher
    • Publication Date2001-10
    • RightsCopyright 1996–2011 WGBH Educational Foundation
    • AccessFree access
  • Standards
    • Common Core State Standards for Mathematics

      Select a standards document:

  • User Comments
    • 4
      Geog./ History/ math connections
      By Uncle Bob on 09/09/2013 - 10:07
    • An activity that crosses disciplines, gives interesting sideline info, and can be used to illustrate conversions and emphasize precision.