Text Sources for Text Sets   NewsELA - Leveled texts for all content areas: https://newsela.com/ Smithsonian Tween Tribune - Leveled texts for all content areas: http://tweentribune.com/ For The Teachers - Leveled texts: http://www.fortheteachers.org/ Read Works: Reading passages and text sets: : http://www.readworks.org/ Article of the Week - Articles to build background and content knowledge: http://www.kellygallagher.org/article-of-the-week/ New York Times - While a number of these topics would not lend themselves to argument/opinion mini-units, plenty of them would: http://learning.blogs.nytimes.com/