Resources and Tools for Elementary Math Specialists and Teachers
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Train Trouble

This Technology Problem of the Week (tPoW) challenges students to use proportional reasoning to determine the speed of a train that two children in a tunnel evade by running in opposite directions, given only the kids' relative starting position and speed as they run out of the tunnel. It links to the Geometer's Sketchpad sketch "Train Tunnel." Solve and explain your solution; download hints and answer checks. Free registration is required.
Contributed by: The Math Forum, Author
Math TopicMeasurement, Number Sense, Fractions, Mathematical Practices
Grade Level6+
Resource TypeProblem Set, Interactive Media

  • Additional Information
    • AudienceLearner
    • LanguageEnglish (USA)
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorThe Math Forum, Author
    • Publication Date1999
    • RightsCopyright (c) 1994-2011 Drexel University.
    • AccessFree access with registration
  • Standards
    • Common Core State Standards for Mathematics

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