Organic.Edunet Web Portal. OER Commons. OpenScout Search. CARNet lms - moodle. Encore d'autres portails REL du projet ODS. Resursi.e-edu. FUNecole® Creative Learning Environment. Miksike: Learning Folders. Spool. LMS - Lernen mit System. Progetto Dryades / Dryades Project. i2geo - WebHome. How do you measure the earth's circumference?
Simply using the sun, a stick, similar triangles, and… communication. Eratosthenes did it centuries ago. It possible to do that with pupils next Friday, March 21st. To this end: register on find a partner school, go out and measure. Discover the COSMOS. OpenScienceResources.