This interactive Flash applet develops children's fraction concepts (partitioning, equivalence, and unit) by building on their informal understanding of rational numbers in the familiar context of sharing cookies fairly among friends. Users decide on the number of friends, the shape and number of the cookies, and how to cut and distribute them equally. The activity is very flexible and incorporates multiple representations of fractions, area models, numerical symbols, and voice cues. Downloadable pdfs of cookie images are provided as well as a User Manual that includes implementation suggests and a review of research.


  • Mathematics > General
  • Education > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12


Grade 2,Visualization,Grade 1,NSDL,Grade 4,Teaching strategies,Addition,Early Elementary,Express regularity,Reason quantitatively,Mathematics,Equivalent fractions,Arithmetic,Analyze and persevere,Fractions,Division,Number and operations,Visual representation,Algebraic representation,Grade 5,Life Science,Composition and decomposition of numbers,Informal Education,Concept formation,Vocational/Professional Development Education,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Comparison of numbers,Practice Standards,Educational research,Elementary School,Representation,Chemistry,Operations,Upper Elementary,Process skills,Connections,Grade 3,Problem solving,oai:nsdl.org:2200/20140728160646054T,Education



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