Work Process

  • 0: before the first measurement

    On line Pretest
    Presentations and exchanges between pupils,
    Communication of the geographic coordinates of the school
    Localization on a Google map

    (you must be member of the Eratos Google group to edit the Google documents)

    Name of task Action Place
    1-School data  Check : City, Country, Name of school, Latitude, Longitude (send message if error) Google Drive
    2-School presentation Upload an image banner Twinspace > Materials >Images>School Banner
      Upload an image banner google > Schools Banners > Photo banner
      Write a description of the school (native language and english)  
    3-Students account Invite the students (username + pswd) Twinspace>Members>Invite members>Pupils
    4-Students Create a forum (City Country) Twinspace>Forums>Add forum 
    presentation Create a thread (Student name) Twinspace>Forums>Add forum>City-Country>Create thread 
      Present oneself and interact with other students Twinspace>Forums>
    5-Eratosthenes experiment  Present the historical experiment EEE group> Teacher's guide


    1: before any measurement
    Experimental preparation of the measure
    Organization of measures over several days (equinox or solstice Strategies)

    Students are organized in international teams: Task forces


    2 during the measurement
    Determination of the solar noon
    Measures of the height of the gnomon, and the length of the shadow,
    Photographies and videos

    3 ° after measurement
    Instant communication through social networks
    Pooling of internet documents :
    Publication of the results of measurements on a shared google spreadsheet of the month in "School data" .
    Publication of the photos  in your school photo gallery of the TwinSpace and in your google "School gallery 2020"

    4. before the videoconference
    Verification of results, estimation of measurement quality from ephemeris
    Looking for the best partnership in a shared spreadsheet in Google drive
    Choice of the partner school which will lead to the nearest calculation 40000km.
    Drawing the geometrical figure of the measurement, followed by calculation of the circumference of the Earth using a Geogebra model.
    Preparation of the videoconference with the slides (country-city-school-student-made) and intervention (of) student presenters
    Communication of the results during a videoconference.
    Publication of the video conferencing