This set of eight interactive activities lets the user explore angles from many different perspectives. Activities include (1) visualizing the size of an angle; (2) examining objects that will stand or fall with right and non-right angles; (3) identifying obtuse, right, acute and straight angles; (4) guessing angle measures with different levels of precision; (5) exploring regular shapes and their angle measures; (6) studying angles in a fractal tree that is drawn with user inputs of the same angle measure between the branches at each stage; (7) exploring angle measures through firing a cannon (8) drawing with a Logo activity.


  • 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


Visualization,Make use of structure,NSDL,Grade 4,Grade 3,Critical thinking,Fractal geometry,Spatial sense,Visual representation,Mathematics,Concept formation,Plane geometry,Upper Elementary,Word problems,Grade 5,Attend to precision,Angle measure,Angles,oai:nsdl.org:2200/20140728161142974T,Modeling,Informal Education,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Geometry,Practice Standards,Elementary School,Representation,Estimation,Polygons,Connections,Engineering,Problem solving,Measurement,Process skills,Education,Reasoning



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