Open Educational Resources

A curated collection of teaching materials

Isla urbana

Isla urbana

by | Nov 25, 2025

Description: Isla Urbana is a project that promotes the harvesting and use of rainwater in Mexico, particularly in communities with limited access to clean drinking water. By installing rainwater harvesting systems, the initiative aims to mitigate the water crisis,...
¿Es posible sembrar agua?

¿Es posible sembrar agua?

by | Nov 25, 2025

Description: This video introduces the water sowing technique, which is used by a coffee grower in Antioquia, Colombia to conserve water sources on his farm. A mixture of sea salt, brown sugar and gravel or river stones stimulates water retention and filtration in the...