This site promotes training for teachers in the field of human rights. There is a Lesson Plan related to Identity, which I think is key to starting a process of social inclusion. Eventhough I don't teach children, this lesson could be adapted for adults.
These are ready-made lesson plans that may have to be adapted to a particular context.
A teacher might want to promote critical thinking skills in order to guide the students into discussing their ideas.
We have plenty to read in the field of education, however, reading for pleasure has lots of benefits for non-native speakers teachers and students. This is my favorite website to find all sorts of books to read for free!