The Calçada we worked on is located in Sete Rios, in front of the Zoo (Jardim Zoológico de Lisboa), in Praça Marechal Humberto Delgado, in Lisbon.[br][br]GPS coordinates: 38º44’33”N 9º10’06”W.

[url=https://www.geogebra.org/classic/jtpgdfgw]https://www.geogebra.org/classic/jtpgdfgw[/url]

[url=https://www.geogebra.org/classic/y7hrvmcf]https://www.geogebra.org/classic/y7hrvmcf[/url]

[url=https://docs.google.com/presentation/d/e/2PACX-1vTg99U7mziUtEV7m3bQs6zWULCoI4XTbzbe_UtpiKkinwmGln4nAUAL9d4ZwqLC0oJ84BnGajtU1HFe/pub?start=false&loop=false&delayms=3000]https://docs.google.com/presentation/d/e/2PACX-1vTg99U7mziUtEV7m3bQs6zWULCoI4XTbzbe_UtpiKkinwmGln4nAUAL9d4ZwqLC0oJ84BnGajtU1HFe/pub?start=false&loop=false&delayms=3000[/url]