This interactive pan balance allows students to enter numeric or algebraic expressions and investigate the important concept of equivalence as well as practice arithmetic and algebraic skills. Users place an expression in each of the red and blue pans. These expressions may or may not include the variable x. If the expression is algebraic, a value for x is entered or adjusted by moving the slider. As the value of x changes, the results will be weighed and graphed. Instructions and exploration directions and questions are included.


  • 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,Grade 6,NSDL,Grade 4,Grade 3,Addition,Grade 8,Visual representation,Representation,Mathematics,Exponents,Arithmetic,Analyze and persevere,Concept formation,Division,Number and operations,Upper Elementary,Algebra,Grade 5,oai:nsdl.org:2200/20140728160516212T,Subtraction,Multiplication,Equations,Informal Education,Graphing techniques,Middle School,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Comparison of numbers,Reason abstractly,Practice Standards,Elementary School,Reason quantitatively,Decimals,Operations,Algebraic manipulation,Communication,Mathematical language,Grade 7,Order of operations,Process skills,Expressions,Education,Construct arguments,Reasoning



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