This interactive Java learning tool allows a teacher to demonstrate and explore with students number line models for two simple variable expressions for multiplication. The first expression is a variable with an understood coefficient of one and the second is the multiplication of a variable by a coefficient. Sliders are used to select the value of the variable (-10 to 10) and the coefficient (0 to 10). Check boxes show or hide the algebraic expression, the expression with substitution, the notation shown for multiplication, the result, and a model for the multiplication, shown as jumps along a number line.


  • 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


Algebraic representation,Make use of structure,NSDL,Grade 5,Addition,Upper Elementary,Whole numbers,Express regularity,Representation,Number concepts,Social Sciences,Arithmetic,Concept formation,Process skills,Number and operations,Visual representation,Algebra,Multiplication,Composition and decomposition of numbers,Integers,Graphing techniques,Middle School,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Practice Standards,Grade 6,Life Science,Elementary School,Reason quantitatively,Chemistry,Operations,Mental calculation,Algebraic manipulation,oai:nsdl.org:2200/20140728160631164T,Mathematics,Engineering,Vocational/Professional Development Education,Expressions,Education



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