This interactive Flash applet allows students to explore number properties and to develop systematic search strategies in dealing with divisors and remainders. It could also provide a context for practicing multiplication facts. The user chooses a divisor and the applet arranges counters numbered 1-100 into equal rows of the chosen number. Users can then color code any column, redivide the counters, color another column, and observe the effects. A question generator provides challenges which can be answered with or without the help of the applet. The Teachers' Notes page offers suggestions for implementation, discussion, extension, and support, along with links to related applets.


  • 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 3,Make use of structure,NSDL,Grade 4,Grade 5,Visual representation,Representation,Number concepts,Social Sciences,Arithmetic,Analyze and persevere,Concept formation,Division,Number and operations,Upper Elementary,Mathematical language,Multiplication,Composition and decomposition of numbers,Informal Education,Whole numbers,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Comparison of numbers,Practice Standards,Life Science,Elementary School,Reason quantitatively,Chemistry,oai:nsdl.org:2200/20140728160648376T,Operations,Mental calculation,Communication,Mathematics,Engineering,Process skills,Education,Construct arguments



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