Difference engine: Let the games beginhttp://www.jobcreatorsalliance.org/Old_Blogs/1_Policy_News/Difference_engine__Let_the_games_begin.aspx<span style="font-family: 'times new roman', serif; font-size: 12pt; color: black; ">New free Apple App allows teachers to produce their own interactive textbooks, and the results show students using it score far better than those using traditional textbooks.</span>N VSun, 29 Jan 2012 12:29:16 GMT