Write their directions on the overhead, with content vocabulary in a large column down the center. Fill in prepositions, etc. Have a few students follow the class directions to get to a few destinations. Put any new vocabulary items on the vocabulary list during initial trips. Have student come back in and ask one student to give the directions.
Students correct each other.
Repeat this process until all students have participated. Circulate and facilitate groups, concentrating on verb use in English. Have students find their homes on internet map. Ask students to draw the route that shows how they get to class. Have intermediate and higher-level students write the directions.