Resources and Tools for Elementary Math Specialists and Teachers
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Birthday Cakes

This problems is an opportunity to explore triangular numbers in the familiar context of decorating a birthday cake with a number of candles corresponding to a child's age. The problem lends itself to systematic strategies and multiple representations. The Teachers' Notes page offers rationale, suggestions for implementation, discussion questions, and ideas for extension and support.
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Contributed by: Millennium Mathematics Project, Publisher
Math TopicNumber Sense, Basic Operations, Number Concepts, Algebraic Thinking, Mathematical Practices, Mathematical Processes
Grade Level1, 2, 3
Resource TypeActivity

  • Additional Information
    • AudienceLearner
    • LanguageEnglish (United Kingdom)
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorMillennium Mathematics Project, Publisher
    • Publication Date2003-05
    • 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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