A good book which includes lesson plans is _Contemporary Art and
Multicultural Education_. One of the authors is Zoya Kocur, and I cant
remember the name of the second author (sorry). Also the book _Art Since
1960_ incorporates European contemporaries.
Just an observation, ArtNews' "Top 25 Most Influential Artists" is a good
start, but note there are no minorities represented. You might want to
find a text which is more pluralistic.