Over the years, Ms. Lane’s third grade mathematics classroom had become increasingly diverse. Challenged by the growing population of English Language Learners (ELL) and he r need to change her teaching practice to meet their needs, Ms. Lane selected to study how best to teach one of her greatest challenges, Ana, a Latino ELL who also had a learning disability. Ms. Lane and her two university mentors found that using a collaborative action research model provided a structure for researching, designing, and implementing strategies that helped Ana improve her mathematics performance. The university mentors found that they, too, benefited from working together as critical partners while assisting Ms. Lane in this collaborative action rese arch
