This interactive Java applet provides practice in sorting triangles by type using a visual representation. Students drag scalene, isosceles, equilateral, right, and non-right triangles into Venn diagrams. Feedback on the students' choices is provided. An animated tutorial can be viewed first and at later times.
Keywords:Visualization,Make use of structure,NSDL,Grade 4,Grade 3,Visual representation,Mathematics,Analyze and persevere,Concept formation,Process skills,Upper Elementary,Grade 5,Express regularity,Angles,Logic and foundations,Informal Education,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Geometry,Reason abstractly,Practice Standards,oai:nsdl.org:2200/20140728160802505T,Elementary School,Representation,General,Plane geometry,Engineering,Problem solving,Venn diagrams,Education,Triangles