This site offers five easy ways to make your classroom instruction more ELL-friendly: allow errors to pass, get visual, show empathy to your students, repeat yourself in varying ways, and invite use of students' first languages in the classroom.
12 Ways to Support ESL Students in the Mainstream Classroom - Advice from three ESL teachers on the things regular classroom teachers can do to help English language learners thrive in mainstream classrooms.
Bright Ideas: What Every Teacher Needs to Know About Working with ELL Students. This website has some great ideas for working with ELL students. As I have observed, I have seen a lot of ELL students. It amazes me how teachers work with these students!