This E-example from NCTM's algebra standard helps students in the upper elementary grades understand ideas about functions and about representing change over time. It includes a software simulation of two runners along a track and students have an opportunity to analyze how a change in the starting position or the length of the stride will affect the time needed to reach the finish lines. Students can control the speed (stride length) and starting points of the runners, watch the race, and examine a graph of the time-versus-distance relationship.


  • 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,Functions,NSDL,Grade 4,Grade 3,Critical thinking,Express regularity,Strategies,Number concepts,Analytic geometry,Analyze and persevere,Concept formation,Process skills,oai:nsdl.org:2200/20140728160727559T,Linear,Upper Elementary,Algebra,Grade 5,Model with mathematics,Modeling,Patterns and sequences,Informal Education,Whole numbers,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Geometry,Practice Standards,Number and operations,Number patterns,Reason quantitatively,Algebraic thinking,Physics,Cartesian coordinates,Systems of measurement,Communication,Mathematical language,Mathematics,Reasoning,Connections,Rate,Elementary School,Problem solving,Measurement,Education,Construct arguments,Nonstandard,Representation



Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike


This resource has not yet been aligned.
Curriki Rating
'NR' - This resource has not been rated
'NR' - This resource has not been rated

This resource has not yet been reviewed.

Not Rated Yet.

Non-profit Tax ID # 203478467