iPad apps: (all are free unless otherwise stated)
appsgonefree
15 Apps for the 1 iPad classroom
http://www.weareteachers.com/community/blogs/weareteachersblog/blog-wat/2013/06/24/15-apps-for-the-one-ipad-classroom
http://www.knowmia.com/search?c=58&sc=66&t=2287