Type:

Other

Description:

This interactive Flash lesson gives students practice in classifying triangles and measuring angles. Despite its title, the lesson explains, compares and contrasts acute, obtuse, right, scalene, isosceles and equilateral triangles. Students are given practice using a virtual protractor to aid in the classifications. A Teacher Guide (pdf) is available [see #5 at MathActive Lessons for Grades 5-6, cataloged separately]. The lessons list also includes links to Spanish, Navajo, and non-voiced versions of this lesson.

Subjects:

  • 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

Keywords:

Grade 6,NSDL,Grade 4,Grade 5,oai:nsdl.org:2200/20140728161147109T,Express regularity,Representation,Mathematics,Arithmetic,Analyze and persevere,Concept formation,Plane geometry,Number and operations,Visual representation,Mathematical language,Angle measure,Angles,Informal Education,Use appropriate tools,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Geometry,Comparison of numbers,Practice Standards,Middle School,Length,Elementary School,Reason quantitatively,Upper Elementary,Communication,Connections,Measurement,Process skills,Education,Triangles

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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