Improving My Classroom Library

In an attempt to improve my classroom library selection that I offer to my students, I have been in search of ways to find cheap and even free books. though I teach high school science, I am a firm believer that any reading is beneficial to my students. in my online search i have stumbled upon the website www.friedbeef.com/best-places-to-get-free-books-the-ultimate-guide/ . This website offeres numerous places to recieve free books and even book trade-in sites. It also liste several sites with top 10 lists. I found this very useful.