Resources and Tools for Elementary Math Specialists and Teachers
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Baby Weight

In this lesson students use a rule of thumb about the weight of babies to practice doubling and halving numbers. They complete an organized table and compare data using vertical and horizontal double bar graphs. The lesson includes a student activity sheet and extension ideas.
Contributed by: National Council of Teachers of Mathematics - Publisher, Marcy Cook - Author
Math TopicMeasurement, Number Sense, Basic Operations, Mathematical Practices, Mathematical Processes, Data and Statistics
Grade Level1, 2
Resource TypeActivity, Lesson Plans

  • Additional Information
    • AudienceEducator
    • LanguageEnglish (USA)
    • Education Topic
    • Interdisciplinary Connection
    • Professional DevelopmentNo
    • ContributorNational Council of Teachers of Mathematics - Publisher, Marcy Cook - Author
    • Publication Date2008
    • RightsCopyright (c) 2000 - 2011 National Council of Teachers of Mathematics
    • AccessFree access
  • Standards
    • Common Core State Standards for Mathematics

      Select a standards document:

  • User Comments
    • 4
      Good Practice with Doubling and Halving
      By bethb on 09/27/2012 - 11:52
    • Not only is this a great lesson for data displays, but this lesson also requires students to double or halve the weights given.
    • 4
      A double/halve fan
      By Uncle Bob on 10/30/2012 - 11:16
    • The live activity (doubling/halving a group) is a good idea. I wish there were a few more live examples in number and in other contexts like doubling/halving a length of string (unmeasured). I think when later it's time to operate on multi-digits and fractions/decimals, it would be well to get the doubling/halving down before using general operands.