【實用教育app】NSDA & HDC|最夯免費app-綠色工廠好玩App

This is Harvard Debate Council (HDC) USA and National Speech & Debate Association (NSDA) USA members-only debate study U-learning (Ubiquitous based Learning Management System) application. NSDevil, the first to commercialize the U-learning in S. Korea, is partnering with Harvard Debate Council.