One of the themes that has presented itself is the connection to land and environment. This is an important aspect to incorporate for culturally responsive education.
The Salmon Nation has a number of resources for bioregional education, including essays on a number of topics. They also have an extensive section with links to other websites.
http://www.salmonnation.com/index.php
Resources for Rethinking has a variety of resources like lesson plans and units for teachers wanting to teach sustainability.
http://resources4rethinking.ca/
Catherine