Always an important question. Find the publication here at http://exclusive.multibriefs.com/content/using-content-materials-for-esl-instruction/education
EVERY teacher is an ESL teacher! Therefore, pay attention to teaching language alongside with content. See some examples here is videos of real teachers.
Something, all mainstream teachers are wondering about. Read more here: http://blog.tesol.org/adapting-content-for-ells-what-non-ell-teachers-should-know/#sthash.PvI8tGdE.dpuf
Success in math highly depends on understanding English. We already know this but do other teachers know? Read more in “To Teach Math, Study Reading Instruction” at http://www.edweek.org/ew/articles/2015/04/01/to-teach-math-study-reading-instruction.html?cmp=ENL-EU-NEWS2