One major challenge for college English educators in a digital age is how to expand the traditional English curricu- lum to include the instruction of  digital  literacy  skills for  students from  diverse  disciplines． This  study  describes  the  curriculum design and implementation of  Doing English  Digital ，a  project-based  modular  course  at  Peking  University  that  integrates  the  in- struction and assessment of  English digital literacy  skills for academic purposes in a constructivist online learning environment．