He has been teaching in the field of languages and literacy for more than 20 years, teaching four foreign languages in addition to reading and language arts courses. Erekson collaborates with K–12 educators to teach and do research on reading, writing, and oral language. He taught elementary grades and collaborated with middle school teachers to coordinate a successful reading center for eight years, where the vitality of social studies content helped young readers make breakthroughs in reading and writing. Erekson has presented his work both nationally and internationally, and he recently worked with Denver Public Schools' elementary teachers on a three-year state-funded learning experience on social studies and literacy.