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Welcome to Open Discovery Space


Be part of the Eratosthenes experiment!



 “Eratosthenes' measurement of the Earth's Circumference" is an activity that engages ODS schools in international cooperation. Students from schools across the world measure the Earth’s circumference by performing the experiment of Eratosthenes, originally carried out in the 3rd century B.C. 

Over 120 schools have already registered to participate to this year's event! At their respective noontimes on the equinox day - 21st of March - the students will measure the length of shadows cast by sticks, then consult the observations made by others at the same latitude. By sharing this data, invoking the properties of right triangles and applying proportional reasoning to angular distances, the students will obtain a good measurement of our planet's size.

 What do you need to do?

  • Register by completing the name, longitude and latitude of your school.
  • Find a registered school at the same longitude with you.
  • Join efforts with the matching school and record your data.
  • Calculate the circumference of the Earth.

This year the experiment will take place on the 21st of March, on the equinox day. Thus, for your matchup –if no other schools can be found on the same longitude - you can consider the existence of a virtual school on the equator with experimental data 0 (shade of a one-meter stick measured at a certain time). This way you can also have an accurate outcome by conducting the experiment by yourself.

Join today and let your school be part of an exciting international activity! For more information, please visit the website: http://eratosthenes.ea.gr/en 

The Eratosthenes Experiment is organized in the framework of the European Commission's Open Discovery Space project.

2013. Students measuring the Earth circumference 


ODS Contest: "Let's move teaching process to the limelight!" 

 WHATA contest for teachers to create a learning scenario. You can submit your own scenario to http://www.ods-contests.eu/

WHOTeachers from all over Europe.

WHENThe contest closes on April 10th, 2014

WHYThe ODS Contest is a chance for teachers interested in innovative educational methods and tools to create a learning scenario that will be selected (voted for) by their co-contestants!

The three winners will be nominated as “ODS Teachers of 2014”, experiencing the publicity related to this nomination. Also, the three winners will be distinguished participants of the ODS summer school in Athens, (July 2014), with all related expenses covered!

HOW: Teachers wishing to participate have to be a registered ODS teacher. The school where he/she is teaching needs also to be a registered ODS school. Similarly, the Learning Scenario has to be created through the usage of the ODS authoring tools.

The entry (Learning Scenario) must be digital and uploaded onto the website.

For more information and rules of participation please access http://www.ods-contests.eu/ 



What is Open Discovery Space?



OpenDiscoverySpace: Unique Resources just a click away!


If we want a powerful innovative culture in schools which is self-sustaining we have to empower system-aware practitioners, working ever more closely with the service users, to create it. And to avoid simply creating interesting but isolated experiments, we have to design in collaborative ways of learning and enquiry between professionals – a “pull” rather than “push” approach. To this end, many different organisations with high quality and unique expertise in their field have decided to join forces in a European effort to propose a scientifically grounded, technological sustainable and organisationally disruptive service for the modernization of school pedagogy that will give to all parties involved in schooling a motivation for change.


This is our Open Discovery Space, Join a Community for Teachers by Teachers!