This webpage is about the Noon Day project, which is a worldwide effort to measure the circumference of the earth. Students try to measure by a method created 2000 years ago first used by Eratosthenes. Students at various sites around the world will measure shadows cast by a meter stick and compare their results. From this data students will be able to calculate the circumference of the earth. There is an informational video explaining the project. Included on the webpage is a photo gallery, schedule, lesson plans, dissuction area, glossary, and archive.


  • Education > General
  • Mathematics > 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


Grade 6,NSDL,Grade 8,Space Science,Mathematics,Social Sciences,Asking questions,Grade 7,Measuring,Communicating,NSDL_SetSpec_1007936,Analyzing data,Collecting data,Circumference,Middle School,Science process skills,Earth and space science,Earth in the solar system,Science as inquiry,General,oai:nsdl.org:2200/20120114184428469T,Vocational/Professional Development Education,Measurement,Education,Geoscience



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