The authors of the SIOP model for teaching English learners have published a resource book specifically for K-12 teachers of mathematics - a must read for ESL teachers.
Teachers of mathematics and ESL teachers alike struggle to close the gap between native English speaking students and English language learners of all ages when it comes to the multifaceted subject of math. What is the best way to teach students who are learning difficult mathematical concepts at the same time that they are learning a difficult new language?
Read more at Suite101: A Valuable Resource for K-12 ESL Math Teachers: Review: The SIOP Model for Teaching Mathematics to English Learners