This flash applet provides students with an activity to become more familiar with factors and multiples. The challenge is to arrange the four number cards (1, 2, 3 and 21) on a square of the grid to make as many different diagonal, vertical or horizontal lines as possible. The number card can be placed on a square of the grid if the square is the same number, a multiple of that number and or a factor of that number. Users have the ability to change the difficulty level. The Teachers' Notes page offers rationale, suggestions for implementation, key discussion questions, ideas for extension and support.


  • 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,NSDL,Grade 4,Factors,Critical thinking,Reason quantitatively,Number concepts,Social Sciences,Arithmetic,Analyze and persevere,Division,Number and operations,Upper Elementary,Mathematical language,Grade 5,Multiplication,Composition and decomposition of numbers,Informal Education,Whole numbers,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Practice Standards,Life Science,Elementary School,Strategies,Chemistry,Operations,Mental calculation,Education,Communication,Mathematics,Problem solving,Process skills,oai:nsdl.org:2200/20140728161306601T,Reasoning



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