This series of activities allows students to experiment to discover proportional relationships This activity has three objectives: "(1) Students generate data by translating information from a verbal problem, record results in tabular form, and write a rule for the number patterns discovered in the table. (2) Students plot a set of data points and connect the points to form a graph of the related rule. (3) Students learn to discriminate proportional from nonproportional relationships on the basis of formulas and graphs used to describe these situations." It consists of four worksheets. The first allows students see the proportional relationship between surface area of Cuisenaire robs and develop formulae to express that relationship. The second worksheet asks students to graph the data they collected and determine if the relationships are proportional or nonproportional. The third and fourth sheets give students extra practice using the steps they have learned to determine proportionality in two different problems. This site gives a helpful explanation of the pedagogical choices present in the lesson as well as answers and steps to solving the problems presented.


  • Mathematics > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
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Middle School,Grade 7,Grade 8,oai:nsdl.org:2200/20120614151542541T,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-016,High School,Vocational/Professional Development Education,Mathematics,NSDL



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