Type:

Other

Description:

This brief article describes the historical methods of marking and measuring time. Among the instruments and methods discussed are sundials, water clocks, celestial motions, and mechanical clocks. Included are descriptions of the sources of inaccuracies of these methods. Links to related resources and a separate page of pedagogical notes are provided.

Subjects:

  • Science > General
  • Social Studies > General
  • 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:

Visualization,Grade 6,NSDL,Grade 5,Spatial sense,Mathematics,Social Sciences,Concept formation,Process skills,Upper Elementary,Attend to precision,Mathematics history,Informal Education,Use appropriate tools,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Science,Practice Standards,Middle School,Reading in mathematics,Elementary School,Time,Social Studies,History/Policy/Law,oai:nsdl.org:2200/20140728161127295T,Physics,Communication,Rate,Measurement,Famous problems,Education,Geoscience,Earth science

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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